working section area 中文意思是什麼
working section area
解釋
試驗段橫截面面積-
Abstract : the paper is based on the working particle for sever al bridges in the construction of w8 section of sheng - yan railway project. it sy stematicaly instructs the construction method of bore - hole filling pile in the rock area with under - earth mined - out layer
文摘:筆者以神延鐵路w8標段多座橋梁工程實踐為基礎，系統介紹了有地下采空層的巖石地區鉆孔灌注樁施工的方法 -
This area features a dramatic full - size section of a future space station, visitors can move along an elevated walkway through the space stations working, exercising and living modules
這里是與實物原大的太空站一角，觀眾穿過走廊，便可見到太空站內的工作艙運動艙和起居艙。 -
Finally, the two dimensional flow in the diffuser is calculated, the results show that the change of ma makes an effect to the performance of the diffuser. owing to the accretion of ma, the action of oblique shock waves and the boundary layer pricks up, the flow separates from the wall where the shock waves impinge on the boundary layer more quickly, the cluster of diamond shock waves becomes larger. moreover, by comparing the change of flow field under different structure parameter, it is found that the augment of length of constant area section alter the structure of fluid field little, a smaller area ratio and larger angle of compression section make the diffuser working better
最後，針對擴壓器中的二維流場進行了數值模擬，結果表明馬赫數對擴壓器性能影響較大，隨著馬赫數的增大，擴壓器管道內激波-附面層干擾加劇，流動從附面層分離相應加劇，激波串數目增多;通過比較不同結構參數下的擴壓器內流場，發現等直段長度的變化幾乎沒有改變流場結構，只是對局部流場稍有影響，並且在其它參數不變的情況下，一定范圍內減小面積比a2 / a1和增大收縮角有利於擴壓器性能的提高。 -
Under the same working pressure and flow rate, the flow passage length and cross - section area of the seven different emitters were compared. according to those results, the anti - clogging ability of emitters was analyzed and several good structural form of flow passage were obtained. in addition, regression model describing the relationship among flow rate, the length of flow passage and work pressure was set up
比較了不同結構形式滴頭的流態指數和相同工作壓力和流量下的流道長度與流道截面積，分析了其抗堵塞性能，得出了較佳的幾種流道結構，並建立了描述滴頭流量與工作壓力及流道長度之間關系的函數模型。
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