質心速度 的英文怎麼說

中文拼音 [zhíxīnsùdù]
質心速度 英文
mean ma velocity
  • 質 : Ⅰ名詞1 （性質; 本質） nature; character; essence 2 （質量） quality 3 （物質） matter; substance;...
  • 速 : Ⅰ形容詞（迅速; 快） fast; rapid; quick; speedy Ⅱ名詞1 （速度） speed; velocity 2 （姓氏） a surna...
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  • 速度 : 1. [物理學] velocity; speed; blast; bat 2. [音樂] tempo3. （快慢的程度） speed; rate; pace; tempo
  1. And the explicit finite difference method, the combining method of the central difference method and newmark s constant average acceleration method, and the transmitting boundary are used. by comparing the acceleration determined by the several methods of the displacements or velocities, a computing method of acceleration employed the one side difference of velocity is more practicality in this research. corresponding to normal incidence of the body waves, p waves or svwaves, and rayleigh surface waves, two two - dimensional finite difference programs are compiled to compu te the dynamic response of two - phase media

    以土力學模型為基礎，利用以土骨架和孔隙流體的四個位移為基本未知量的數值方法去模擬二維飽水介質中的地震波傳播，採用了顯式差分方法（中心差分法和newmark常平均加速度法結合）和透射邊界，通過比較利用幾種差分格式求解的加速度結果，發現一種用速度單邊差分求解加速度的方法在本文研究中較為實用，分別編制了體波（ p波或sv波） 、 rayleigh面波輸入時求解兩相介質動力響應的兩個二維數值分析程序。
  2. When the escape velocity at a certain distance from the center reaches the speed of light, an event horizon is formed within which matter must inevitably collapse onto a single point, forming a singularity

    當離中心某個距離的逃逸速度達到光速，形成一個活動視界，在裏面的物質一定不可避免在單一點之上坍塌，形成一個奇異點。
  3. The results are summarized below : 1 ) study on soil science indicates that soil granular structure is the focus adjuster for soil fertility and it affects the space, water - grasp, aeration and anti - erosion of soil. and the percentage of aggregate is one of the key index that decides the speed and extent of soil erosion, hardening and degeneration because the soil degeneration will first lead to the disappearance of crumb - structure. so it is very important that the physical course and character of soil in different land use pattern are realized

    現將主要結果摘要如下： l 、士壤學研究表明，團粒結構是土壤肥力的中心調節器，影響著土壤的空隙性、持水性、通透性和抗蝕性；任何土壤的退化首先將表現出團粒結構的消失；團聚體百分比是決定土壤侵蝕、板結等物理過程速度和幅度的關鍵指標之一，了解不同土地利用和土壤管理方式的物理過程和性質相當重要。
  4. Backed up by the soplat theory based on particle kinematics, the second chapter of this paper presents with analysis and simulation of several single observer passive measurement models, which uses such relative movement parameters as bearings changing rates and centrifugal acceleration information on the basis of bearings measurements. in the third chapter, the observability of location respectively using bearings and its changing rates information and centrifugal acceleration information is analyzed, and its observable condition is got. the fourth chapter puts forward the modified covariance extended kalman filtering ( mvekf ) against the defect of traditional extended kalman filtering ( ekf ), whose performance is simultaneously compared in the chapter with the performance of ususal tracking algorithm such as ekf, mgekf, iekf by computer simulation

    在近年來提出的基於質點運動學原理的單站無源定位理論基礎上，本文第二章提出了幾種在角度測量的基礎上增加角度變化率及相對運動的離心加速度等運動學參數的單站無源測量模型，並對它們進行了分析和模擬；第三章分別對利用角度及其變化率信息定位和利用離心加速度信息定位的可觀測性進行分析並得到了相應的可觀測條件；第四章針對傳統擴展卡爾曼（ ekf ）方法的缺點，提出了一種修正協方差的擴展卡爾曼濾波（ mvefk ）方法，並將其和ekf 、 mgekf 、 iekf等常用的單站無源定位濾波方法進行了性能模擬比較；第五章通過引入雷達機動目標跟蹤方法和模型，提出了利用角度及其變化率對機動輻射源跟蹤的多級噪聲自適應方法和imm方法；第六章主要對角度變化率和離心加速度參數的獲取技術進行了研究，提出了幾種高精度測量脈沖序列多普勒頻率變化率的方法。
  5. Experiments on the gas flow patterns in the flowmeter prove that the algorithm used in arm digital gas mass flowmeter is capable of significantly improving the sensitivity of the heat sensor, hence superior in terms of the measurement of gas mass flow

    並將此演算法應用於以arm處理器為核心的數字式氣體質量流量計中實驗證明，該方法能夠明顯改善熱式傳感器的動態響應速度，實現其快速補償。
  6. By comprehensive considerate the intercoupling relationship between the side - slip angle and the yaw rate, the combine - control strategy ’ s predominance distinctness because it overcome the disadvantages of the large side - slip angle under the - control and can ’ t following the ideal yaw rate under the - control. vehicle possesses optimal control stability with the combine - control obviously

    由於聯合控制策略綜合考慮了質心側偏角和橫擺角速度之間相互耦合的關系，克服了單獨橫擺角速度控制時質心側偏角過大，以及單獨質心側偏角控制時對理想橫擺角速度跟蹤不好的缺點，因而優勢明顯，聯合控制策略下的車輛具有最佳的操縱穩定性。
  7. In high speed centrifugation condition, the centrifugation temperature and nacl ionic intension of reverse extraction solution were changed to study their effects on the separation degree and the interaction of protein and aot, and the optimum centrifugation temperature and nacl addition were selected

    摘要研究了在高速離心作用下，反萃液的離心溫度和鹽離子強度對aot和蛋白質的分離程度及相互作用的影響，並確定最佳離心溫度和鹽離子強度。
  8. Experimental techniques for simulating cavity decoupling explosion in laboratory wear developed, which include a center initiating explosive charge designed in shape of mini - spherical with yield equivalent to 0. 125 ~ 8. 00gtnt, circular electromagnetic particle velocity gages and aluminum bar strain gages measurement techniques, spherical divergent stress waves generator. large amount of tamped and cavity explosion experiments had been made in granite, soil, cement mortar and water media environment, respectively

    本文建立起了包括中心起爆的0 . 125 8 . 00gtnt微型球形炸藥裝置的研製、圓環形電磁粒子速度計及鋁桿應變計測試技術和球形發散應力波實驗裝置等在內的實驗室微型藥量空腔解耦化爆模擬技術，並在花崗巖、土、水泥砂漿和水等介質中進行了大量的填實和空腔爆炸實驗研究。
  9. Instead the practical realisation of the unit of force makes use of known masses ( deadweights ) which will produce a known force when subjected to the effect of local acceleration due to gravity

    代以實復現力值單位的定義是利用已知質量（靜重） ，受地心引力影響所產生的重力加速度來產生已知的力值。
  10. The optimum design of the beat back - impact crusher is proposed, which aims at the highest efficiency of the machine work. the optimum designed mathematics model of the main structural dimension of the crusher ( m, xc, s, w 2 > ir ) is built with restraining conditions such as force condition, energy condition, hammer steady condition, no moving interference, strength of spin axle and bearing condition, upper limit and lower limit of the design variant condition etc. finally, an example is give to illustrate the efficiently of the method proposed

    在綜合考慮影響破碎機效率的各因素的情況下，提出了滿足以力，能量，錘頭穩定性，幾何條件，不發生運動干涉，轉子軸和滾動軸承的強度等約束條件，建立了包含破碎機關鍵參數（錘頭質量m ，軸心o到銷軸錘頭接觸距離r ' ，四川大學碩士學位論文錘頭質心到銷軸與錘頭接觸點的距離拙，錘頭與巖石碰撞到銷軸與錘頭接觸點的距離s ，轉子的速度。
  11. The company possesses advanced technology and professional equipments, which forms the force at the core of completing large - scale bridges and roads with high speed and quality

    公司擁有先進的施工技術工藝和性能優良的成套專業設備，形成企業的核心力量- -高速度、高質量地完成大型橋梁、高等級公路、大型隧道的施工能力。
  12. This text completely and systematically studies the status and the development of the pyrolysis and the fluidization of biomass, which distill the bio - oil in the domestic and international area, as well as the existing problems. this thesis primarily include following aspects : ( l ), by experimenting and measuring the energy ( heat value ) and the content of c, h, n chemical element of right 20 kinds of common biomass, on the base of the experimental result, and respectively established the biomass energy predict experiment formula with the element of h and c is from change, and passed the ro. os examination, which provides the basis and convenience for flash pyrolysis fluidization device energy to convert the rate to compute with biomass energy utilization calculation ; ( 2 ), proceeded the tg and dtg experimentation equal velocity ( 10 ? / min, 20 ? / min, 40 ? / min, 60 ? / min ) heating and constant temperature heating by studying on eight kinds of biomass samples, according to the experimental data and arrhenius formula, we established the dynamics model of pyrolysis of, then, using the goast - redfern and p function, we also solved the dynamics parameters and analyze out every kind of biomass ' s frequency factor and parameters of activation energy, and established the every kind of dynamics model of pyrolysis of biomass, all of these provide the theories and basis to make sure the reactor ' s flash pyrolysis work temperature scope design and the describing of pyrolysis reactor dynamics ; ( 3 ), in order to study and ascertain the process of heat completely getting to pyrolysis time of varied size biomass particles, we observed and measured the ratio of length and diameter ( l / d ) with the varied biomass through electron microscope, we concluded the l / d ratios usually is from 5. 0 to 6. 0, the average is 5. 3 ; ( 4 ), we studied the process of biomass transiting and the theory of complete pyrolysis time with the theory of complicated heat field, we got the time ( t ) of the varied size biomass particles arriving to complete pyrolysis, and we knew that the complete pyrolysis time and the time which get to the biggest production ratio are identical, all of these studies provide the theory base for design and forecasting the flash pyrolysis reactor solid state resort time ; ( 5 ), according to the above experiment result, synthesize to make use of the engineering the mechanics, engineering the material, machine the design to learn the principle, deduce, establish the theory of rotation cone flash pyrolysis reactor material resort time ( t ) and reasonable rotation velocity ( or frequency ) relation theory ; and ( 6 ), we gave the reactor ' s smallest cone angle certain, reactor cone wall strength design theory, the reactor production ability theory, the power design method and the critical rotation velocity theory

    本文較全面、系統地綜述了國內外生物質熱解液化制取生物燃油技術研究發展現狀及存在的問題，主要研究內容有： （ 1 ）實驗、測定了20種常見生物質的能量（發熱量）和c 、 h 、 n元素含量，根據實驗結果分別建立了以h和c為自變量的生物質能量預測經驗公式，並通過r _ （ 0 . 05 ）檢驗；為閃速熱解液化裝置能量轉化率計算和生物質能量利用率計算提供了依據和方便； （ 2 ）選擇了8種生物質試樣作了等加熱速率（ 10 min 、 20 min 、 40 min 、 60 min ）和恆溫加熱的tg和dtg實驗，根據實驗數據和阿倫尼烏斯公式建立了生物質熱解反應動力學微分方程，並採用goast - redfem積分法和p函數對其動力學參數進行了求解，解析出各種生物質的頻率因子和活化能參數，進而建立了各種生物質的熱解動力學模型，為科學確定反應器的閃速熱解工作溫度范圍及熱解反應動力學描述，提供了理論和依據； （ 3 ）為研究和確定不同尺度的生物質顆粒中心達到全熱解的時間，在體視顯微鏡下對不同粒度的生物質顆粒的長徑比進行了實驗觀察和測定，得出生物質的長徑比（ l d ）一般在5 . 0 6 . 0之間，平均為5 . 3的結果； （ 4 ）採用復雜溫度場傳熱學理論對生物質傳熱過程及充分熱解時間理論進行了研究，解析推導出了不同尺寸生物質顆粒中心溫度達到充分熱解溫度的時間（ t ） ，得出了理論推導的充分熱解時間與最大產油率的熱解時間相一致的結果，為閃速熱解反應器固相滯留時間設計和預測提供了理論依據； （ 5 ）根據上述實驗結果，綜合運用工程力學、工程材料、機械設計學原理，推導、建立了轉錐式閃速熱解反應器物料滯留時間（ ）與轉速（或頻率）合理匹配理論； （ 6 ）提出了轉錐式閃速熱解反應器的最小錐角設計、錐壁強度設計、生產能力設計理論和功率計算方法及臨界轉速理論等。
  13. Methods do well preoperation guidance and mental nursing to the 28 cases implemented pairs of side ventricles of the brain physiological saline, strengthen the observation after the operation, do a good job of the nursing of the drainage tube, control rinse and speed, observation nature, drainage of liquid in time of drainage, finish nursing of wound puncture, implement good basic nursing at the same time strictly

    方法對28例實行雙側側腦室生理鹽水持續沖洗引流的病人做好術前指導及心理護理，術后加強病情觀察，做好引流管的護理，嚴格控制好沖洗及引流的速度，及時觀察記錄引流液的性質，做好穿刺部位的護理，同時落實好基礎護理。
  14. The measuring principle of brake acceleration, brake speed, height of vehicle gravity center, pitching inertia of sprung mass and efficiency of suspension anti - pitching are also theoretically discussed to provide new methods for vehicle test research

    進一步說明了該系統在車輛制動減速度、制動初速度、整車質心高度、簧上質量縱向轉動慣量及懸架抗制動點頭率的測試或計算方法。
  15. Second, the author introduced a new stability region, and programmed a trajectory of variable zmp, which was defined as a cosine curve ; the author also designed a cog - compensated method to keep the cog ’ s height ; based on dynamics of 3 - d inverted pendulum, the author educed the cog ’ s trajectory equation of the robot in the three - leg - support phase, and used third - order splint function to ensure the acceleration continuity of the robot ’ s cog in the four - leg - support phase. at last, walking patterns of the corresponding gait are generated through programmer design

    然後，提出了一種新的支撐區域選取方法，採用了按餘弦規律變化的zmp運動軌跡;為了維持機器人行走時重心高度不變，採用了一套有效的質心高度保持方法;基於三維倒立擺模型，推導了機器人三腳支撐期質心運動軌跡方程;採用三次樣條曲線插值規劃了四足支撐期加速度連續的質心運動軌跡。
  16. Based on variable zmp and dynamics of 3 - d inverted pendulum, we educed the cog ( center of gravity ) ’ s trajectory equation of the robot in the single - support phase and transition of locomotion phase. and we used third - order spline function to ensure the acceleration continuity of the robot ’ s cog in the double - support phase. thereby, the smooth trajectory of cog was gained by planning

    由基於可變zmp和三維倒立擺的動力學原理，推導出了單腳支撐期內和步行方式轉換期間機器人的質心運動軌跡方程;並採用三次樣條曲線來保證機器人在雙腳支撐期質心加速度的連續性，從而由規劃得到了光滑的質心運動軌跡。
  17. Based on the theory of field and considering all of the effects from around movement objects as one object in center of mass, expressing velocity and acceleration as vector, the dissertation extends mutual action model to a new microcosmic model for non - motorized vehicle : vector field model

    根據場的理論，對非機動車受到來自周圍多個運動物體的影響綜合為處在質心位置的一個運動物體的影響，用矢量表示速度與加速度，將相互作用模型擴展為一種新的非機動車微觀模型：矢量場模型。
  18. To further the study of the take - off technical theory in the backstyle high - jump, we make a research into the cuved tosbury take - off cour se of backstyle high - jump. it was pointed out that the backtyle high - jump cucve d run take - off created efficient condition for the earlier change and accumla tion of gravity center and vertical speed of fosbury flop the moving direction t he bady

    為進一步研究背越式跳高起跳理論，對背越式跳高弧線助跑起跳過程進行分析，揭示背越式跳高的優越性在於充分發揮和利用助跑速度提高起跳效果，其實質是弧線助跑起跳為背越式跳高身體重心運動方向的提早轉變和垂直速度的累積創造了有利條件。
  19. Comparing with the current observations, which include the number density distribution in space, mass function, etc., the so - called standard modes for both the power law and gaussian cluster initial mass functions are selected among many runs of simulations. the deviation from the standard modes, which is resulted from the change of the parameter for the initial conditions, is discussed in detail. the discussion of the model parameters is also presented although they are adopted as the typical values based on previous work

    對應一定的初始分佈我們發現無論是冪律的還是對數高斯的球狀星團初始質量譜經過長時間的動力學演化都會得到和現在銀河系觀測到的球狀星團系統相符的對數高斯的質量分佈；動力學演化會明顯地改變球狀星團系統的空間密度分佈，靠近銀心區域的球狀星團瓦解得更多；經過動力學演化后的球狀星團速度分佈函數在靠近銀心的區域明顯得不同於初始分佈，初始擁有較大軌道偏心率的球狀星團更容易瓦解。
  20. In the process to create and pass to the key account value, it is necessary to grasp the success factors for the kam which includes common interest, communication, commitment, credibility, compromise, collaboration and the change of the relationship. part 4 give a method for the kam of hd copper co., ltd., it requires the company construct the key account belief, make a key account management plan strategically, do the work that the plan requires and control the relationship between the key account and the hd copper co., ltd., check the work and notice the change of the relationship, and develop the new key accounts. the main innovative contribution in the paper includes the follow aspects : establishing a system analysis framework for kam in strategically thinking the relationship between the company and its key accounts, exploring the significance and profile of the key account group of profitability, strategy, and loyalty, putting forward three levels of the key accounts " value, concluding the success factors for kam, thinking the relationship between the company and its key accounts as four stages

    為了實現這個目標，本文的第三部分深入分析了大客戶關系管理的有效策略及需要把握的成功要素，為了制定有效的策略，需要把握大客戶關系變化的特徵，把大客戶關系發展過程中的生、長、衰、死四個階段都管理好:大客戶關系管理的有效策略是創造和提升大客戶價值，需要從價格、質量、速度、技術、創新和品牌等大客戶價值要素入手，把握大客戶價值創造的動態特徵，向大客戶傳遞核心大客戶價值、大客戶期望價值和超越大客戶期望的價值，大客戶價值是大客戶認知利益與大客戶認知價格的差額;在為大客戶創造和傳遞大客戶價值時，需要把握住大客戶關系管理的成功要素，包括企業與大客戶的共同利益基礎、雙向交流和溝通、企業信守承諾、樹立企業的信譽、企業對大客戶必要的妥協和讓步、與大客戶合作、注意公司與大客戶內部和外部環境及關系本身的變化。
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