contact velocity 中文意思是什麼
contact velocity
解釋
接觸速度-
Effect of contact breakaway muzzle velocity
直流電路觸點分離初速度對分斷的影響 -
In chapter four, according to the analysis on the boundary theory and velocity field of main fluid zone of two - phase fluid pumps, the parameter equations of vane ' s modular curve of centrifugal pump are given, which contact the boundary " layer and eular theory of two - phase fluid pump by the fixing angel of vane as variable and leading into the velocity coefficient a. the results show that, in designing process of vane ' s modular curve of centrifugal pump, the determination of the total shape and parameters relates the flow properties of two - phase fluid and output ability of pump, or the design of the modular curve of centrifugal pump is the kernel of hydraulic design
第四章依據固液兩相流泵的邊界層理論及對主流區速度場的分析，給出了離心泵葉片型線的參數方程；它是以葉片安裝角為參變數，以引入的速度系數k _ v作為中間因子，將兩相流泵的邊界層理論和歐拉理論聯系起來? ?它說明了這樣一個事實，在離心泵葉片型線的設計過程中，它的整個形態或參數的確定都關繫到兩相流體的流動特性和泵的輸出能力，或者說，離心泵型線的設計是其水力設計的核心。 -
Principal conclusions were drawn as the following : the non compatibility of pressure or velocity of the gas on both sides of the contact surface is the cause of the formation of shock wave ; the heating effect of reflective shock wave to driving gas during charging or exhausting process is the internal mechanism of peak oscillating effect, and all the factors that influence the formation and the running of the shock wave will influence the peak oscillating frequency, cooling effect
主要結論如下：熱分離機內激波形成的原因是射氣瞬間接觸面兩側壓力和速度不相容；峰值振蕩效應的內在機制為反射激波對充氣階段的驅動氣或低溫排氣的加熱，凡是影響激波形成及運動的因素都將對峰值振蕩頻率、冷效應及熱效應產生影響；當充、排氣時間比為0 . 1763時，最佳射流激勵頻率出現在高階峰值振蕩頻率上。 -
Tooth surface equations and contact line equations of the involute worm gearing are established according to its machining methodology. meshing characteristics in rigidity condition are studied. these characters include the inductive normal curvature along the contact line on the worm surface, the first and the second limit lines during the engage of the worm gear, and the influence of the intersect angle between the contact line the relative velocity of the worm and the gear on transmission performance
根據漸開線圓柱蝸桿傳動的創成方法，建立了漸開線圓柱蝸桿和蝸輪的接觸線方程式、齒面方程式，分析了漸開線圓柱蝸桿傳動的剛性嚙合特性，如蝸桿與蝸輪嚙合時的誘導法曲率、一類界限曲線、二類界限曲線和蝸桿與蝸輪間相對速度方向和接觸線方向的夾角對傳動性能的影響； 2 -
However, when the samples have different effective contact areas, the degrees of dissolution may depend on the swing of the pendulum between the dissolution velocity and their effective contact area
但當樣品在水巖反應過程中有不同的比表面積時，溶蝕作用的強弱或快慢就取決于巖石溶蝕速率與水巖反應有效接觸面積的消長關系。 -
This essay takes the method of listing equations of gears " surface directly and installing them in appropriate coordinate system to establish the mathematic model for analyzing engagement of spiral helical gear. programs use this mathematic model to make numerical computation as well as to output the contact domains diagram and the relative velocity diagram on this foundation
本文採用直接列寫齒面方程、在適當的坐標系中安裝的方法，建立了螺旋齒輪嚙合分析的數學模型，編製程序利用該數學模型進行數值計算，並在此基礎上輸出接觸區圖和相對速度圖。 -
Research on surface and grain boundary passivation mechanism obtained effects of surface recombination on crystalline silicon solar cell performance and the theoretical expression of grain boundary recombination velocity. the limit ratio of short - circuit current increment for anti - reflection coating utilization on solar cells was obtained. the crystalline silicon solar cell spectral response, contact resistance and minority carrier lifetime measurement systems were established
鈍化機理研究獲得了表面復合對不同表面摻雜濃度晶體硅太陽電池性能的影響、表面和界面復合速度的理論表達式；研究得到了減反射膜對太陽電池短路電流增量比的極限；建立了太陽電池光譜響應、柵線電極接觸電阻和少子壽命等測試系統。 -
Comparison between quasi - static indentation and low - velocity impact tests has been conducted in this paper at last. in accordance with energy balance principle, the dent depth vs. peak contact force under impact curve, which is derived from the dent depth vs. impact energy curve, is similar with the dent depth vs. indentation force curve with an evident transition
最後，本文還對低速沖擊試驗與靜壓痕試驗做了比較分析，並基於能量平衡公式，從沖擊能量凹坑深度關系導出了沖擊最大接觸力凹坑深度關系曲線，它與靜壓痕試驗得出的壓痕力凹坑深度曲線的變化趨勢相類似，即出現較明顯的拐點。 -
Acoustics - characterization of sources of structure - borne sound with respect to sound radiation from connected structures - measurement of velocity at the contact points of machinery when resiliently mounted
聲學.關于由連接結構產生噪聲輻射的結構載振動噪聲源的特性描述.機械裝置彈性連接接觸點聲速測量 -
In experimentation, the project adopts computer, data collection board, sensor and software. finally, the theory analsis is validated that the contact of noise elimination, velocity of flow, resistance loss
在試驗中，採用了以計算機、數據採集卡、傳感器和處理軟體得到阻性消聲器的動態特性，從而驗證了阻性消聲器的消聲量、氣體流速和阻力損失之間聯系的理論分析。 -
Waste - silicate glass - test for determination of the initial dissolution velocity on contact with a regularly renewed aqueous solution, regenerated within a closed circuit by evaporation and condensation
廢品.硅酸鹽玻璃.通過蒸發和濃縮在一封閉環管內重新產生的，不斷更新的含水溶液的接觸中初始溶解速度的測定試驗 -
As a part of the civil 863 plans, two multiple - contact models for two kinds of braking system are built in the paper, in which contact fields are described as coons surfaces, initial velocity is programmed in fortran. the thermal - mechanical coupling braking processes are simulated for the first time by msc. marc, the general - used nonlinear fem software. time distributions of the velocity, the stress and the temperature of the components under various initial velocity and brake force are obtained, which offer theoretic gist to study the life of the wheel, the disc and so on
作為國家行業863重大課題《鐵路機車車輛虛擬樣機系統》的一部分，本文在研究接觸問題和熱?機耦合問題數值方法的基礎上，採用國際上通用的非線性有限元分析軟體msc . marc建立了踏面制動和盤形制動主要部件的多體接觸計算模型，其中用解析方法描述，即用nurb曲線、高斯曲面來描述接觸區域，用fortran語言編寫定義初速度的用戶子程序，首次對兩種制動過程熱?機耦合進行了數值模擬，定量給出了主要制動部件在不同初速度、不同制動力下各個時刻的速度、應力和溫度的變化規律，為研究車輪、閘瓦以及制動盤壽命提供了理論依據。 -
These measures are as follows : shorten the primary wind intervals to improve thermal load of the burner ; reduce the size of hypothetical circle of contact to prevent the flame from splashing ; use nozzles with larger height / width ratio to increase the effusive rigidity, so as to increase the jet flow depth of secondary wind into the main jet flow ; use a higher primary wind velocity to increase its jet flow rigidity ; use a special flame holder structure of the primary nozzle, so as to improve
這些技術措施主要有:縮小一次風間距以提高燃燒器區域熱負荷;縮小假想切圓防止火焰刷墻;採用高寬比較大的二次風噴口以增加射流剛性，提高二次風射流進入主射流的深度;採用較高的一次風速來提高一次風射流剛性;一次風噴口採用特殊穩燃結構;提高下二次風的托粉能力。 -
Ultrasonic flow measurement technology, which developed rapidly in recent several ten years, is a new - style flow measurement technology. it uses the liquid velocity information carried by the ultrasonic when it is propagating in the liquid to measure the flow of liquid. the main merits of the flowmeter is non - contact, high accuracy, wide measurement scope, convenience of installation and maintenance, especially acceptable for measurement of temporary flow, large flow, and flow in dangerous environment
超聲波流量測量技術是近幾十年來才發展起來的一種新型的流量測量技術，它利用超聲波在流體中傳播時所載流體的流速信息來測量流體流量，具有非接觸、高精度、測量范圍寬、安裝維護方便等特點，特別適用於臨時管道流量、大口徑管道流量、以及危險性流體流量的測量。 -
This thesis reviewed the mesh theory of plane double - enveloping worm gearing : the equations including the first enveloping equation, the second enveloping equation, contact line equations of the first enveloping and the second enveloping, boundary equations of the first enveloping and the second enveloping, the equations of relative velocity and absolute velocity
本文介紹了平面二次包絡環面蝸桿傳動的嚙合原理基礎：第一次包絡嚙合方程和第二次包絡嚙合方程，相對速度、相對角速度方程，第一次包絡的接觸線方程，第二次包絡的接觸線方程，以及第一次、第二次包絡的一界線方程和二界線方程。
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