脈動弧 的英文怎麼說
中文拼音 [màidònghú]
脈動弧
英文
pulasating arc-
Fluid noise mainly comes from out put pulsation of rate of flow, the main reason of out put pulsation of rate of flow is the instant high pressure return flow that obturation cubage produced when the big round curve pressure transition. the v trough on the port plate can reduce the fluid noise. in this paper, the author based on the acting of dam a river and condensability of liquid and used matlab language as tool to calculate the v trough on the original port plate and drew out the p - t diagrammatic curve and analyzed its shortcoming and improved the design of original v trough and got that the best size of its angle was 12. 3 and its length was 5mm and the cross section was an equilateral triangle
流體噪聲主要來源於輸出流量脈動，造成輸出流量脈動的主要原因是閉死容積在大圓弧段壓力切換時產生的瞬時高壓迴流，在配流盤上開設v型尖槽可降低因高壓迴流而引起的流體噪聲，本文以截流作用和液體的可壓縮性為理論依據，以matlab語言為工具，對原配流盤上的v型尖槽進行了理論計算，繪制出p - t圖線，分析了它的不足，並對原有v型尖槽進行了優化設計，得出了v型尖槽的最佳幾何尺寸：配流盤平面上的v型尖槽的兩邊的夾角為12 . 3 ，槽長5mm ，槽的橫截面為等邊三角形。Interpretation signs : graphic signs in the green arc on behalf of the sense of the times and dynamic range
標志釋意：標志圖形中的綠色動感弧線代表時代感和山脈。The tooth shape of gear pump has important influence on machining and characteristics of pumps, such as flow rate, fluctuation rate and noise etc. first, the working principle of tatsuno combined pumps is analyzed in this article
齒輪泵的齒形對泵的加工、性能（如：流量、脈動率、噪聲）等有很大的影響。本文首先分析了進口tatsuno組合泵的工作原理，並進一步分析了其採用一對雙圓弧齒輪的優缺點。Although the flux per revolution of the optimized pumps is a little smaller than that of tatsuno combined pumps, other characteristics, such as fluctuation rate, maximum pressure angle and velocity fluctuation rate etc, are much better. the methods to cut gears are proposed in the theory for the practical produce in the future
雖然，在體積相等的條件下，優化出來的外圓弧包絡線內嚙合齒輪泵的排量略小於tatsuno組合泵的排量，但其它性能（如：流量脈動率、最大壓力角、速度波動量）都更優。A comparison of the flows with different gate - opening rates shows the causes that opening the gate at a higher rate is favorable to the reduction of cavitation, gate vibration as well as the gate load fluctuation. in addition, a study has been made to show the influence of the high - speed jet flow coming downward from the narrow gate gap on the flow condition in the tunnel downstream to the gate
通過分析比較不同閥門開啟速率對流動特性的影響，闡明了快速開啟閥門不僅有利於減少空化空蝕也有利於減小弧門振動和啟門力的脈動，此外，研究了門楣處狹窄縫隙高速射流對門后流態、壓力脈動和弧門受力等方面的影響。Pulse start metal halide lamp is featured on its arctube, it is formed by olive shape, the lumens is much higher than regular one, excellent color rendering capability, it is beloned to the categoryof higher encrgy saving lighting source
產品說明：特點：脈沖啟動型金鹵燈的特點是電弧管均為橄欖型燈泡，比普通的金鹵燈具有更高的光通，高的顯色指數。Unsteady separated flow, produced during the gate - opening period in the reverse radial gate tunnel of a high - lift shiplock, is characterized by negative pressure and high velocity as well as their intense fluctuations in space and time and could easily result in various harmful phenomena such as cavitation, gate vibration and sonic boom, which have been observed and confirmed by prototype and physical model tests
高水頭船閘輸水反弧閥門開啟過程中，后廊道內發生急變分離流，負壓、高速水流以及壓力與流速的劇烈時空脈動變化容易誘發空化空蝕、門振和聲震等有害現象已被原型觀測和物理模型試驗研究證實。In the research of water arcjet, serious oscillation existed in jet and arc voltage was found and it led to unstable work state of arcjet
目前對水電弧加熱的研究過程中，發現水電弧加熱發動機羽流和弧電壓存在強烈的脈動，不能穩定工作。Our research found that, the main reason which led to the oscillation of jet and arc voltage was the oscillation of propellant flowrate. the oscillation of flowrate was caused by the oscillation of water evaporation in pipes
本文的研究發現導致水電弧加熱發動機羽流和電壓脈動的主要原因為推進劑流量供給的脈動，而供給流量的脈動是由於水在管內汽化的脈動引起的。Vibration - resisting electricity contact pressure meter is used for occasion by environment quake vibration excle in pulsaling lash by medium - resistant and suddenly unload ; usually it is make use of form a complete set by relevant eletric device ( such as relay and contact appliance and so on ). so realized attain auto - control post a letter ( give an alarm ) for pressure system by survey. compare with ordinary for a special model electricity contact pressure meter, zhe indicator ' s function by survey pressure more stabilize, more accurate, and powerful of resist eletric arc, and it is use for even more long life
耐振電接點壓力表，適用於環境劇烈振動場合，可耐介質的高強脈動沖擊及突然卸荷；通常該儀表經與相應的電氣器件（如繼電器及接觸器等）配套使用，即可對被測（控）壓力系統實現自動控制發信（報警）的目的，與普通專用型電接點壓力表相比，指針測壓性能更穩、準，且抗電弧強大，使用壽命更長。分享友人