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condensability n.可凝結性,可冷凝性,可壓縮性。

condensable

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 流體噪聲主要來源于輸出流量脈動,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回流,在配流盤上開設v型尖槽可降低因高壓回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,并對原有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。

The dr . wu lumbar tractor has modern design with two jars which utilize the condensability of air and the hydromechanical theory to realize the auto balance of the air pressure in the two jars , thus guaranteeing the elastic pulling of lumbar , the only one that conforms to the “ human bio - elastic mechanics ” 伍醫生腰椎牽引器設計新穎,采用雙氣缸連通,利用空氣的可壓縮性與流體力學的原理實現了兩氣缸壓力自動平衡,達到腰椎彈性牽引之目的,是目前國內唯一符合“人體彈性生物力學”的腰椎牽引器。

The author takes consider of the aerial condensability . according to newton ’ s second law and gas equation , it is elicited to the gas pressure distributives in the drill pipe 通過壓力分布圖可知,截面突變導致壓力發生突變,空氣流速在該處最低,因此,最小風量采用截面突變處風速計算。