optimum velocity 中文意思是什麼

Based on the analysis of the kinetic track of the scallion during planting, basic relationships ' among the characteristic parameters of the transplanter with two flexible metal disks, including the velocity of the transplanter, the rate of transplanting, the spacing between seedlings, the angle of releasing seedlings, the diameter and length of seedlings, have been set up in this paper, and then a mathematic model of optimum design for the transplanter with the final planting angle of seedlings ( y = 90 ) has been formulated and solved with good results. according to the optimum solutions, a new type of transplanter with two flexible metal disks has been developed and the field tests of the transplanter have been conducted

為了實現大蔥機械化移栽，作者分析了國內各種移栽機的結構特點，確定了以撓性圓盤式栽植器為研究對象，在分析撓性圓盤式栽植器的運動軌跡和特徵參數的基礎上，完整地確立了撓性圓盤式移栽機的基本參數：栽植頻率、栽植株距、機組前進速度、輸送帶上秧槽的間距、撓性圓盤半徑、撓性圓盤的轉速、夾苗株數以及傳動比之間的相互關系，並建立了以蔥苗栽植傾角= 90為目標的優化設計數學模型，提出了撓性圓盤式大蔥移栽機的優化設計方法。

We investigate the whole process and technique details of micropiv, such as the micro scale flow mode making technique, and optimum velocity according to the existing test condition, and selecting of trace particle, the software interface of the image acquisition, the software interface, analysis of the specification parameters of the micropiv technique, and the selection of the key experiment parameters

本文研究了micropiv試驗技術的全部過程和技術細節，如現有條件下微型流場的製作工藝、適合測量條件的流場速度、示蹤粒子的選擇、圖像採集的軟體介面等，分析了micropiv技術的性能參數和重要實驗參數的選取。

The design method of double crank mechanism and optimum transmission double crank mechanism are presented according to the conditions of minimum transmission angle, the time ratio, the factor of velocity variety or the minimum size

摘要研究了按照最小傳動角、速度變化系數、行程速比系數以及尺寸和最小等條件設計雙曲柄機構以及最佳傳動雙曲柄機構的方法。

The research results show that the counter - flow condensers have a better performance than that of other arrangements in single - circuit condensers, and that branch flow should be adopted in multi - rows condensers to decrease the pressure drop and increase the heat transfer capacity, and that the influence of gravity force can not be ignored, and that there must be an optimum refrigerant mass flow which can make the condenser perform best when the air velocity is constant while there must be an optimum air flow which can make the condenser perform best when the refrigerant mass flow is constant

研究結果表明，單迴路冷凝器中，逆流布置換熱效果最好，叉流其次，順流最差；多排管冷凝器應盡可能採用分流方式，以減小壓降，增強換熱；布置冷凝器流程時，重力的影響不可忽略；當風量不變時，必然存在一最佳製冷劑流量使冷凝器性能達到最佳；當製冷劑流量保持不變時，也相應存在一個最佳風量使冷凝器性能最佳。

The injection unit is equipped with high specification piston or bladder type accumulators allowing optimum efficiency for 2nd stage injection velocity and increase responsiveness of intensification

壓射系統採用優質活塞式或膠囊式儲能器，能提供高效率的二速壓射速度及高反應的增壓。

For shutters, the results show : 1 ) according to the formula p =, the theoretical value of is calculated by the effective velocity of the flow, and its engineering value is calculated by the arriving velocity of the flow, the relationship between the theoretical value of and its engineering value is 2 ) the smaller value of declining angle will result in the smaller pressure loss and smaller outlet velocities. as a result, the declining angle of 30 擄 or less is recommended in some places which need small wind velocity, such as broadcasting studio and library, and the declining angle of 45 擄 or less is recommended in places which need big wind velocity, such as cinema and office ; 3 ) the larger value of ratio between the wide of the shutter b and the space between two boards h ( b / h ) will result in the larger pressure loss and smaller outlet velocities. the range of b / h from 0. 8 to 2. 0 and the optimum value 1. 2 is recommended ; 4 ) the range of b from 10 mm to 50 nun and the optimum value 40 mm is recommended ; 5 ) the proper thickness of the boards 8 of the shutters is 1. 5 mm ; 6 ) cuneiform boards should replace the rectangle inlet boards of the shutters in order to obtain better ventilation

數值模擬採用fluent軟體，計算結果用excel進行處理，通過對大量數值工況進行數值模擬計算，結果表明：對于單側百葉風口，計算表明： 1 ）對于公式p = （ ~ 2 ） 2 ，的理論計算值中定義為流體流經百葉風口內部時的速度，即有效速度，而工程上常使用流體的來流速度來計算，計算表明，的理論計算值與工程應用值的關系為（ _ （理論） ） （ _ （工程） ） = 0 . 813 ； 2 ）當來流速度一定時，擋板傾斜角度越小，壓力損失越小、出口速度越小；因此在要求進口風速比較小的場所，如播音室、圖書館等，宜採用擋板角度30的百葉風口；在要求進口風速比較大的場所，如電影院、辦公室等，百葉擋板的角度應選45 ； 3 ）當來流速度一定時，百葉擋板的擋板寬度b與擋板間距h的比值b h越大，壓力損失越大，出口速度越小，計算表明，鑒于壓力損失、出口風速、板間形成渦流區的大小，百葉擋板的b h值取0 . 8到2 . 0之間， b h = 1 . 2為最佳值； 4 ）當來流速度一定時，在計算的條件下，當百葉擋板寬度b = 40mm時，百葉擋板的阻力系數最小，考慮到渦流區等的影響，建議選用10mm b 50mm的百葉擋板；西安建築科技大學碩士學位論文5 ）百葉擋板的厚度取為1 . sinln為好; 6 ）百葉擋板的入口側可選用具有傾斜度的楔形擋板來代替矩形擋板，利用其較好的導流作用，可得到更好的出流效果。

By using the software, we can get a optimum velocity curve and other curves, check up the parameters of train and line whether or not satisfy the running require

通過這個軟體，可以得到一條優化的列車運行速度等其他曲線，同時可檢驗線路、車輛的設計參數是否滿足運營要求。

According to euvl requirement, this paper also presents a multiplayer thickness distribution control method by use of a platter velocity profiling technique in which the platter revolution speed is varied as a function of its position relative to the sputtering source. the optimum velocity p

採用此方法，筆者在pl50mm完成了均勻euv多層膜的制備，膜厚空間分佈非均勻性由恆定公轉速度的7減小到1 ，達到了euvl的要求。

The principle of the super speed autofrettage technology of the impellers of a booster was described, two design plans of the super speed process were provided, and the optimum method of determining the super rotating velocity was proposed

敘述了增壓器葉輪超速自增強技術的原理，提供了兩種超速工藝的工裝設計方案，並通過有限元分析，提出了最佳超速轉速確定的方法。

The vertical delay stacked source obtains optimum matching with wall rock by controlling the charge mode and the excitation velocity, and maximum utilizes its energy. thus the seismic signal with the high frequency abundance and frequency bandwidth wide be obtained

垂直延遲迭加震源通過控制裝藥方式和控制炸藥速度來達到與圍巖的最佳匹配，最大限度的利用其激發的能量，激發出高頻成份豐富、頻帶寬、高頻能量高的地震信號。

By solving the christoffel equation, the relationship between velocity and angles is obtained, and the ultrasonic inverse velocity curve is illustrated. the dixon equations of ao diffraction on the xoz and yoz planes in ln crystal have been applied to obtain the geometric relationships of acousto - optic interaction. therefore, the beam steering theory is proved to be a possible way to do the optimum design of ln anisotropic acousto - optic deflector. the detailed parameter data and the figures on the xoz and yoz planes with the angle of incidence of - 5 degree are shown up, which will contribute to the desigh of aod

對鈮酸鋰超聲跟蹤反常聲光偏轉器進行優化設計，經研究計算得到了分別在入射角取- 5o時xoz與yoz工作平面中正負一級衍射中分別使用快切變波與慢切變波的情況下，優化設計鈮酸鋰超聲跟蹤反常聲光偏轉器的設計參數，對聲光偏轉器生產設計有實際參考意義。