負加速度 的英文怎麼說

中文拼音 [fùjiāsùdù]
負加速度 英文
[物理學] negative acceleration
  • 負 : Ⅰ名詞1 （負擔） burden; load 2 （虧損） loss 3 （失敗） defeat Ⅱ動詞1 [書面語] （背） carry on th...
  • 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
  1. The mechanism of the downburst formation was also investigated based on the cloud microphysics of the simulated storm and it was found that this downburst was primarily produced by hail loading, and enhanced by hail melting and rain evaporation. and the loading and the melting of hail played a very important role in producing the downburst. the gale at the surface was caused by the severe downburst

    從雲微物理學角度分析了此次局地性大風的形成原因，認為由高空冰雹粒子的拖曳產生的負浮力作用是促發強下沉氣流產生的主要原因，其次是冰雹的融化和雨水蒸發冷卻對下沉氣流起加速作用，冰雹的拖曳和融化作用對下沉氣流具有決定性的作用。
  2. She offers an outstanding range of machinery in the granite and marble processing cycle, including gang saws ang slab polishing lines. in the past years, she held and reached the change of industrial structure. the pioneering technology and the hope of customer are always reflected in the producs with the quickest speed. shengda products shared chinese market and worked well in many cuntries such as italy, usa, australia, turkey, thailand, etc. she is perfecting selling and service networks in allover the wold, shengda allows the customers to keep down the manufacturing costs to better environing conditions and to reach the top quality standard suitable for market requirements

    在科技研發方面，公司以博士後作為負責人，構建了一個由多名高科工程師工程師組成的研發團隊，使公司技術始終領先同行，形成生產技術上的優勢，通過技術改造產品開發技術攻關技術引進，以最快的速度將最新的石材加工技術和客戶的需求反應到產品生產中，使技術和設備走在同行的前端，產品保持國內外同行先進水平，出口到義大利美國澳大利亞韓國和泰國等幾十個國家，受到了石材加工業者的青睞。
  3. However, the overabundance of old and new information, and rapid emergence of web - based search engines have generated a great amount of redundant search results and affected the efficiency and accuracy in terms of users " search efforts

    然而，新舊信息的交織和網路檢索工具的層出不窮，導致了用戶檢索出大量冗餘信息，也增加了用戶識別信息的負擔，更影響了用戶的信息查準率和檢索速度。
  4. At linear stage, the theoretical growth rate for the rt instability in cylindrical and spherical geometries was enhanced ( or reduced ) due to the decrease ( or increase ) in the perturbation wavelength during an implosion ( or explosion ). even in the absence of an acceleration the perturbation could grow in the convergent geometries. the amplitude growth rate was proportional to the cube of the convergent ratio in spherical geometry and to the square of the convergent ratio in cylindrical geometry

    在線性階段，已有的研究表明：一方面，在內爆（或外爆）過程中擾動波長變短（或變長） ，使得不穩定性的增長率變大（或變小） ；另一方面，即使不存在界面加速度，界面運動仍然可能導致擾動幅度的增加，柱幾何中擾動幅度的變化速率正比于界面收縮比的平方，球幾何中擾動幅度的變化速率正比于界面收縮比的三次方，並且擾動幅度的變化方式（增加或減少）只與初始時刻擾動幅度的增長速率（正或負）有關，而與界面的運動方向（向內或向外）無關。
  5. Special features for copying inputting originals auto paper select, auto scaling select, vertical horizontal independent anemographic magnification, final scale adjustment, copy density adjustment 7 degrees, scan start position adjustment, and copy position adjustment, top bottom bottom margin setting, mirror image, trimming, negative positive inversion, header, reference input, rotate image, sharpness, contrast, additional copy, scanning speed change

    自動用紙選擇，自動倍率選擇，縱向或橫向獨立縮放，倍率微調，復印濃度調整，掃描起始位置選擇，復印位置選擇，前後端空白選擇，消除框線，鏡像，正負片反轉，頁眉，參照列印，畫面偏轉，明兩度，對比度，追加復印，掃描速度選擇，電子分頁可選配置
  6. The safety of transmission line plays a important role in power system safety it is not only the requirement of ensure supply power reliability, but also the necessary precondition of enhance power system stabilization, to remove faulty line quickly and accurately, also keep non - faulty line continuous work when some transmission line faults current differential protection is a kind of simple, reliable and good - selective protection manner to any variety of transmission lines, power system development needs current differential protection apply to transmission lines, moreover the advancement of electric and communication technology enable current differential protection apply to transmission lines firstly, the paper discusses, analyses the research and application transmission line protection in detail, compare the principle and realistic presupposition of general line pilot protections secondly, because conventional current vector differential protection are influenced easily by load current and transitional resistance, in order to at the same time quicken protection act, the principle and criterion include work characteristic of differential protect based on fault component sampled values are studied, results shows that differential protect based on fault component sampled values excels general vector current differential protection in reliability, sensitivity and anti - saturation of current transformer in addition, synchronous current sampling methods at all terminals of line is analyzed and estimated lastly, the principle and criterion. also device design about current sampling values differential protection based on optical fiber communication, which apply to short transmission lines are concretely investigated,

    基於基爾霍夫定律的電流差動保護無論對於何種形式的輸電線路都是一種簡單、可靠、選擇性強的保護形式，電力系統的發展使得電流差動保護應用於線路保護成為需要，而電子、通信技術的發展使得電流差動保護應用於輸電線路成為可能。首先，本文對目前線路保護的研究和實際應用情況進行了討論和分析，比較了常用線路縱聯保護的實現原理和實現條件及優缺點。其次，針對常規相量電流差動保護易受正常負荷電流和故障過渡電阻影響的缺點，同時為加快差動保護的動作速度，對基於故障分量瞬時采樣值電流差動保護的原理、判據、動作特性等作了討論和分析，結果表明基於故障分量瞬時采樣值電流差動保護在可靠性、靈敏度、抗電流互感器飽和方面明顯優于常規相量電流差動保護，對電流差動保護各端的同步采樣方法和數據通信也進行了分析和評價。
  7. The results show that the heat preservation coating and its proper thickness are favorable to the enhancement of filling mold speed of aluminium alloy ; the higher the pouring temperature is and the larger the ratio of hollow areas of vertical pouring is, the faster the speed of filling mold of aluminium alloy is ; if the mold is too thick or too thin, it may decrease the speed of filling mold ; the proper length and the area of vertical pouring are favorable to the enhancement of the speed of filling mold ; although negatire - pressure may improve filling the speed, too high negatire - pressure may enlarge the flaw in casting

    結果表明：保溫塗料及一定的塗層厚度有利於提高鋁液的充型速度；澆注溫度越高、直澆道空心面積率越大，鋁液充型速度越快；模樣厚度太厚或太薄，均會使鋁液充型速度降低；一定的直澆道長度及直澆道面積有利於提高鋁液的充型速度；施加負壓會使鋁液的充型速度大大提高，但負壓過大會增大鑄造缺陷。
  8. With the speed - raising of railway and the marketing of the management, the load that the electric locomotive burdens increased annually. in order to guarantee the security of the locomotive, the overhaul must be transited from preventive maintenance to state maintenance, which can accelerate the speed and the quality of the locomotive overhaul and reduce the overhaul cost. the most important achievement is that the overhaul can be performed automatically and digitally and can be effectively competent for the record management of the overhaul data

    隨著鐵路提速和運營生產的市場化，機車運行負荷逐年增加，為了有效保證機車的運行安全，機車檢修必須從定期維修向狀態維修轉變，以提高機車檢修的速度和質量，降低機車檢修成本，更重要實現檢修自動化、數字化，完成對機車檢修數據進行有效的記錄管理，建立機車關鍵設備的狀態參數數據庫，從而實現對機車狀態有效控制。
  9. With the development task background of ctr200g precision centrifuge, the acceleration error factors of centrifuge system are qualitatively analyzed theoretically at first and also quantitatively calculated by means of finite element method, therefore, the structural optimum design problem of the load pan is proposed

    論文以「 ctr200g型精密離心機」的研製任務為背景，首先從理論上對引起離心機系統加速度誤差的因素進行了定性分析，並且採用了有限元方法對其進行了定量計算，由此提出了負載盤結構優化設計的問題。
  10. The acceleration is positive if the speed is increased, negative if speed is decreased

    速度增加的加速度為正加速度，速度減少的加速度為負加速度。
  11. If an arm is stretched forward under water resistance is increased and a reaction force backward is developed, both of which would contribute to negative acceleration

    如果手臂在水中是向前伸展則阻力會隨之增加而向後方的反作用力也會出現，二者都會產生負加速度。
  12. When a swimmer slows and then finally applies forces there are stages of slowing down ( the correct term is negative acceleration not deceleration ) and speeding up ( the correct term is positive acceleration not acceleration )

    當游泳運動員慢下來然後增加力量以求得繼續前進時會有不同的階段，這就是減速階段（正確用語是負加速度而非減速）和加速階段（正確用語是正加速度而非加速） 。
  13. Extreme negative and positive acceleration phases are not a characteristic of swimmers who must be efficient ( e. g., 200 m plus ) who usually demonstrate high rates, almost continuous propulsive force production, and minimum periods of time in long " sculling boat " positions

    最終的負加速度和正加速度階段並不是一個有效率的（例如200多米）和經常呈現高效的，能夠持續產生推進力和盡可能減少處于長的皮劃艇位置的時間游泳運動員的特徵。
  14. The theory of the simulation is that, firstly put fuze and parts in simulation device in reverse, then fire them in high speed by air gun, and they fly into gun spinning quickly and impact cushion and brass block in it, negative acceleration because of impact is to simulate setback, meanwhile they spin with spin gun when impacting, so spin environment can be simulated, so the simulation system can stimulate setback and spin of fuze in fire

    該模擬系統的原理是將引信及其零部件倒置在模擬彈丸中，通過空氣炮以高速發射出去，然後飛入高速旋轉的旋轉管內，與旋轉管內的緩沖塊和黃銅塊碰撞，碰撞而形成的負加速度作為引信發射時受到的后坐，由於碰撞時與旋轉管一起旋轉，模擬引信發射時的旋轉環境，達到模擬引信發射后坐與旋轉環境的目的。
  15. Feedrate planning of continuous micro - line ' s start and end points are discussed, and the constraining conditions, including the machine ' s acceleration and deceleration capability, allowable error of corner machining, maximum acceleration and dynamical behavior of the machine, are established 。

    摘要針對連續小直線段高速高精插補演算法中起始點和終止點的速度規劃，建立了包含機床加減速性能、轉接處誤差控制、最大加速度以及機床負載功率等的速度約束條件。
  16. The law was alike between initial stage and the peak of growth, but the rates reaching maximum of negative and positive were in the different soil depths, and the inflexions of increment and decrement by degrees were also different. the soil water content in terminal stage increased positively, and in surface reached the maximum, but decreased with the depths, except a little increment in the depth of 460 - 600cm. 2. the contents of soil organic matter of 0 - 40cm is greater than other layers in eleven - year locust and 40 - 100cm are little low than 100 - 220cm

    不同生長時期，土壤含水量變化的速度不同，生長初期和生長旺季的規律相似，但速度出現負的最大和正的最大所在的土層深度不同，速度遞增和遞減拐點所在的土層深度也不同，速度出現負值，說明隨著土層深度的加深，土壤含水量在增加，速度為正值，說明隨著土層深度的加深，土壤含水量在減少；生長末期速度均為正值，表層最大，隨土層深度的加深，速度遞減，到460 - 600cm處速度略有增加。
  17. Through the test of the separating sieve ' s and beams vibration acceleration, the dynamic bending moment, torque and shearing force as well as the analyze of each parameter by dividing rotation speed range from 300 r / min to 600 r / min of the main shaft, the change regularity of the vibration of the separating sieve, the vibration and the dynamic load on dangerous cross section with the change of rotation speed of the main shaft is obtained. research shows that there exits apparent relevance between the vibration as well as the dynamic load of the main beam and the vibration of the separating sieve. the vibration of the separating sieve mainly affects the composition of low frequency of the vibratio n of the main beam, appropriately amending the vibration acceleration of the separating sieve, the loading and vibration of the mam beam can be directly improved

    通過分檔測試主軸轉速在300 600r min范圍內分離篩與梁的振動加速度、梁所承受的動態彎矩、扭矩和剪力以及各參量的時頻域分析，得到了主軸轉速與分離篩振動、主梁的振動及其危險截面的動態載荷間的變化規律，研究表明梁的振動和其所承受的動載與分離篩的振動之間具有明顯的相關性，分離篩的振動主要影響梁振動的低頻成分，適度改善分離篩的振動加速度，可直接改善梁的負載和振動特性。
  18. This paper will design an h robust controller to be used acceleration state feedback, control, or, furthermore, both speed and acceleration state feedback control, which can rapidly restore synchronous state under the condition unbalanced loads or uncertain disturbances. the result of acceleration, speed and position dynamically synchronized control is achieved

    設計狀態反饋控制器作為動態同步控制器，對加速度進行補償控制，進一步，對加速度和速度同時進行補償控制，使系統在不平衡負載或不確定性擾動下快速恢復同步，以實現位置、速度和加速度三重動態同步。
  19. It supports the energy requirement in long term acceleration process and as an energetic recovery system for braking process and downhill drive

    超大電容工作在尖峰負載區，為大加速度過程提供能量，在短時間內實現能量回收。
  20. Acceleration : a change in velocity with respect to time. values are either positive or negative with standard orientation

    加速度：速度相對時間的變化。加速度值根據確定的方向而為正或者負。
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