直線減速度 的英文怎麼說

中文拼音 [zhíxiànjiǎnsùdù]
直線減速度 英文
linear deceleration
  • 直 : Ⅰ形容詞1 （成直線的; 硬挺的） straight; stiff 2 （跟地面垂直的; 從上到下的; 從前到后的） erect; v...
  • 線 : 名詞1 （用絲、棉、金屬等製成的細長的東西） thread; string; wire 2 [數學] （一個點任意移動所構成的...
  • 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
  • 直線 : 1. （不彎曲的線） straight line2. （急劇的） steep; sharp
  • 速度 : 1. [物理學] velocity; speed; blast; bat 2. [音樂] tempo3. （快慢的程度） speed; rate; pace; tempo
  1. In benzene or ethyl acetate solution rates increase linearly with methyl methacrylate concentration.

    在苯或乙酸乙酯溶液中其衰減速度隨甲基丙烯酸甲脂濃度呈直線地增大。
  2. Volume shrinkage of sample results in the increasing of the value of the crystallization rate vc and the decreasing the values of the avrami exponent n in the primary crystallization and s, defined as the relative crystallinity degree when experiment data deviate theoretical predicting straight line. compared with the avrami equation, the price equation hardly makes progress on describing the behavior of polymer later stage crystallization

    樣品體積收縮，導致avrami指數n值減小；結晶速度v _ c值增加；表示實驗值偏離理論預測直線時的相對結晶度_ s值減小；與avrami方程相比， price方程仍不能較準確地描述高聚物等溫後期結晶行為。
  3. The ratio of the length to the depth of scour hole decreases with the increasing scour depth, in spite of the reason is the increase of the air concentration, the decrease of the jet velocity or the decrease of the jet thickness. 5. governing equations of the aerated jet flow are established

    摻氣對沖坑形態並沒有實質性的影響，沖坑的寬深比隨沖坑深度的減小而增大，無論造成沖坑深度減小的原因四） 1大學i學博士學位論文是摻氣、降低流速還是減小入射水舌厚度，其變化規律都可用相同的直線關系表示。
  4. Results showed : ( 1 ) cbt cell death in low tempratures is accompanied by characteristic changes, such as, reduced cell size, distorted nucleus, chromatin condensation and margination and cell ( cytoplasmic ) vacuolization ; cell mortality and ca2 * concentration increase along with time passed in low temperature. mitochondrial membrane potential and 02 increased at first, and then decreased. activities of sod decreased at first, followed by significant increasing and finally depressed

    結果表明： （ 1 ） cbt在低溫協迫下，細胞圓縮，細胞核變形，染色質濃縮且邊位，細胞質空泡狀；細胞死亡率隨處理時間的增加而增加；細胞內鈣離子濃度隨處理時間延長而遞增；線粒體膜電位差在低溫處理早期急速上升，隨后一直下降；細胞內超氧陰離子（ o _ 2 ~ - ）在低溫處理前期出現高峰，接著呈下降趨勢；細胞內sod活性在低溫處理前期減弱，接著上升，然後持續下降。
  5. In the paper, based on the existing literature research foundation an analog circuit catastrophic fault location approach by using feedforward networks with back ? propagation learning is realized. by this approach, the simulation require ments before test are reduced because fewer training samples are needed, and the fault location process is fast. this method is very efficient in location of single hard fault wit component tolerances. the measureme nt space feature and the general characterization concept of single and double soft fault in linear circuits are presented. according to this concept, a linear circuits soft fault location approach using subhidden layer bpnn is established with element tolerance, and it is shown that this approach is successful in fault location. a double fault feature extraction.,

    本文在現有文獻理論研究的基礎上實現了採用bp演算法前向多層神經網路對直流測試下模擬電路硬故障的診斷方法。其特點是採用少量典型特徵樣本作為bp網路的訓練樣本，獲得訓練樣本的代價小，減少了測前工作量，同時診斷速度快，在考慮元件容差時仍有好的診斷效果。文中介紹了線性電路單一軟故障和雙軟故障所具有的電壓增量空間特性和統一特徵概念。
  6. The planets in your solar system cooled to a point of having slowed in molecular rotation ; in the slowness a density develops in which time spreads out into a straight line rather than a continuous whole

    你們太陽系統中的行星們正在冷卻到一個已經在分子旋轉中減速的點；在這個減速中，一個密度的成長在這時刻中比一個持續的進程更伸展為一條直線。
  7. 2 % 22 % and 29 % respectively less than using other three knives at cutting speed of 500mm / min when the moisture contents of rootstalks was 48. 2 %. the cutting forces were tested at four different parts of rootstalk that were the middle part along a radius, the tip part along a radius, the middle part along axis and the stalk part along a radius, and the force at the middle along a radius is the largest and increase 32 % 45 % 111 %, respectively more than at the other three parts. the force increase 37 % to cut the rootstalks from the areas one crop a year more than that from two crops a year

    試驗結果表明，根茬含水率愈高，剪切力愈小，根茬含水率與剪切力近似為二次曲線關系；刀片剪切速度愈快，剪切力愈小；凸曲線、斜線、凹曲線和直線四種不同的刀刃曲線對整株根茬剪切力依此由小到大，凸曲線和斜線剪切時有一定程度的滑切作用，所以剪切力相比較小，當根茬含水率為48 . 2 ，剪切速度500mm min時，與其他三種曲線相比凸曲線型刀刃的剪切力依次分別減少了7 . 2 、 22和29 ；對根茬中部、梢部和根部的剪切力，在相同試驗條件下，徑向中部最大，比梢部，軸向根部和根部莖稈所需剪切力分別增加32 、 45和111 ；當含水率為48 . 2 ，刀片的剪切速度為500mm min時，一年一熟玉米根茬比一年兩熟的玉米根茬剪切力增大37 。
  8. 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。
  9. This paper aims at the shortages, which are too much information, too long - processing time, low precision, needing checking and revising, of stl form file in the front processing of laser rapid prototyping, it puts forward a method of 3 - d cad model direct slicing, and it will process section profile curve that direct slicing produces so that this section profile curve will be used in sequent numerical controlling machine tool. direct slicing on the model can reduce data - processing time and file dimension, advance precision of work pieces

    本文針對快速成形前處理過程中使用的stl （ stereolithography ）格式文件的信息冗餘量大，數據處理時間長，精度差，需要檢查和修改等缺點，提出了對三維cad模型直接切片的方法，並對直接切片獲得的截面輪廓線進行了處理使之能夠被后續的工控機所使用，通過對模型的直接切片，能減少數據處理時間，降低文件規模，提高工件精度。
  10. By means of researching the meshing impact in the engagement of standard chain respectively with the spur toothed sprocket and the involute toothed sprocket, it has been discovered through analysis that by adopting the involute tooth for the sprocket could reduce the normal impact velocity in the engaging instant of chain and sprocket, thus lowered the meshing impact among chain and sprocket

    通過研究標準鏈條分別與直齒鏈輪和漸開線齒鏈輪嚙合的嚙合沖擊，分析發現在鏈輪上採用漸開線齒能減小鏈條與鏈輪嚙合瞬間的法向沖擊速度，進而降低鏈條與鏈輪的嚙入沖擊。
  11. One pencil is the simulative milling cutter. parameters setting, milling cutter radius compensation, graphics drawing of the work - piece machined, realizing local control, etc. are the tasks of pc, while line & arc interpolation, motion segment acceleration & deceleration control, position protection at a high precision rate and so on are the duty of dsp motion controller. in the end, the system can draw the cutter center track of the work piece ' s program track accurately

    上位pc機主要完成相關參數設定、刀具半徑補償相關運算及繪制被加工工件的輪廓（程編軌跡） 、實現本地控制等內容；下位機dsp控制器則充分利用美國ti公司的tms320c31浮點dsp的高速度、高精度完成運動控制中的實時直線和圓弧數值插補、運動段加減速控制、運動軸行程限位保護等內容。
  12. Simulation tests show that the machine ' s acceleration and deceleration capability is the key factor to the nc machining efficiency and precision when the turning angle between micro - lines is small, and the error of corner machining is the predominant factor when the turning angle increases to certain degree, and the machine ' s maximum driving moment becomes the decisive factor when the turning angle becomes big

    通過模擬實驗得出：當連續小直線段間拐角較小時，機床加減速性能是影響加工效率和表面精度的最主要因素；當拐角增大到一定程度時，誤差的限製成為約束速度提高的主要矛盾；當拐角較大時，機床的最大驅動力矩起到主要作用。
  13. Instead, there needs to store only the original coefficient matrix, some auxiliary matrices for the preconditioner and several vectors in the iteration methods. further, the core of the iteration is the matrix - vector multiplication and the solution of the auxiliary equations corresponding to the preconditioner. if the solution of the auxiliaries spend not very much, the computational cost in each iteration step will be very cheap, due to the fact that the sparsity of the matrix can be exploited sufficiently

    與直接法相比，迭代法只需存儲原系數矩陣、對應于預處理的幾個輔助矩陣與少量幾個向量，且迭代中除求解輔助線性方程組外，其餘的計算主要是稀疏矩陣與向量乘積，從而能充分利用稀疏性減少計算量，但迭代法的收斂速度一般與系數矩陣的譜分佈有關。
  14. The contributions of this dissertation is listed below. aiming at existing defects of traditional beeline detection by hough transformation ( ht ) arithmetic, such as large storage space consuming, imprecise beeline detection effect and information loss of image feature pixels etc, we suggest two new beeline detection methods. ( 1 ) based on infinite symmetry exponential filter and its recursion arithmetic, new beeline detection methods can get exact direction of image edge pixels in advance, so it reduces highly the calculation quantity of the conventional ht, and improves the speed and the precision of beeline detection greatly

    本論文的主要研究成果列舉如下：針對傳統直線檢測霍夫變換（ houghtransform ， ht ）所存在的參數空間存儲量大，直線檢測不精確以及圖像特徵點信息丟失等缺點，提出兩種新的直線段檢測演算法： （ 1 ）提出一種基於無限對稱指數濾波的ht直線段檢測演算法，在進行邊緣檢測的同時，提前精確定位邊緣點的方向，減少了ht的運算量，提高了運算速度和檢測精度，而且整體演算法便於硬體的并行執行，使得實時處理成為可能。
  15. With the input of a vibration acceleration history of subway train, a full dynamic analysis of soil - pile - structure is carried out. the propagation of vibration wave on the ground and vibration responses of the huge platform and the storied buildings are analyzed. some conclusions are drawn as follows : ( 1 ) with the increase of the distance to the vibration source, vibration intensity of the ground decreases ; ( 2 ) the vibration intensity of the ground in vertical direction is slightly larger than that in horizontal direction ; ( 3 ) with the increase of the distance to the vibration source, the situation that the vibration intensity of each building in horizontal direction is maximum at highest and lowest story whereas minimum at the middle story changes gradually to that decreasing with the height of building ; ( 4 ) in vertical direction, the vibration velocities and accelerations at the end points of each story of a building are the nominal identical, which indicates that the vertical vibration of them is unanimous ; ( 5 ) the vibration intensity in vertical direction of a building is larger than that in horizontal direction ; ( 6 ) increasing of the elasticity of track is an effective way to abate vibration of ground and buildings

    本文以北京地鐵八王墳車輛段地上超大結構（車輛段大平臺及其上的小區樓房）及其地基基礎為研究對象，在研究和分析有關資料的基礎上，用快速拉格朗日有限差分法軟體flac建立了二維數值分析模型，並以列車振動加速度時程作為模型輸入，進行了地基?樁基礎?地上結構的整體動力學分析，分析了地鐵列車運行產生的振動在地面的傳播規律及其對地上結構的影響，得到了如下結論： （ 1 ）隨著與地鐵線路距離的增大，地面的振動強度有減小的趨勢； （ 2 ）地面豎直方向的振動強度較之水平方向的略大； （ 3 ）隨著與振源距離的增大，在水平方向上，地上各幢樓房的振動強度由底層和頂層的最大、中間層的最小逐漸過渡到沿樓層增高而減小； （ 4 ）在豎直方向上，每幢樓各層端點的振動速度、加速度完全相同，表明樓房各層在豎直方向上的運動狀態一致； （ 5 ）各幢樓房豎直方向的振動強度比水平方向的大； （ 6 ）增加軌道彈性是減輕地面和地上建築振動的有效途徑。
  16. Pipelining and parallel technology, accompanying with fast fifo as cache memory, instead of direct program operation, are adopted in the scheme and increase the transmitting speed dramatically ; fpga ( field programmable gate array ) is applied to realize the complex control logic of the system and makes it integrative, flexible and fast ; 386ex based embedded system, along with vxworks real - time operating system is introduced to substitute the microcontroller based system to simplify the hardware design and enhance the overall performance of ssr, and will make the system more easier to be applied to the projects in the future

    該設計方案採用了流水線和并行技術，配以快速fifo緩存的方式取代了直接對flash進行編程的方式，極大地提高了閃存晶元存儲數據的速率；採用fpga技術實現系統的主要控制邏輯，集成度高、靈活性好、速度快；採用基於386ex的嵌入式系統及基於vxworks的嵌入式實時操作系統，取代單片機系統及其編程，提高了系統的整體性能，減輕了硬體設計的負擔，且使系統研發的延續性好。
  17. Because of its outstanding characteristics of high speed, high acceleration, high position accuracy and so on, the direct drive feed system driven by linear motor is hopeful to be a basic type of feed drive system of high speed machine tool in 2 p1 century

    直線電機直接驅動進給系統具有速度、加（減）速度高、定位精度高等一系列突出的優點，有望成為21世紀高速加工機床的基本驅動方式。
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