直管段長度 的英文怎麼說

中文拼音 [zhíguǎnduànzhǎngdù]
直管段長度 英文
flow development length
  • 直 : Ⅰ形容詞1 （成直線的; 硬挺的） straight; stiff 2 （跟地面垂直的; 從上到下的; 從前到后的） erect; v...
  • 管 : Ⅰ名詞1 （管子） pipe; tube 2 （吹奏的樂器） wind musical instrument 3 （形狀似管的電器件） valve;...
  • 段 : Ⅰ量詞（部分） section; segment; part; paragraph; passage Ⅱ名詞（姓氏） a surname
  • 長 : 長Ⅰ形容詞1 （年紀較大） older; elder; senior 2 （排行最大） eldest; oldest Ⅱ名詞（領導人） chief;...
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  • 長度 : length; longitude; size; extent; footage
  1. Modify above model along with altering structural form or the constitution of the bridge, such as different standard, steel ratio, steel pipe diameter, concrete module, brace allocation, the length of concrete of the main ribs, suspending pole mode and cable local vibrations, calculate the variety of dynamic character, analyze this factors which will affect. 2

    對斜拉拱橋自振特性進行參數分析，分別考慮了不同規范、含鋼率、拱肋鋼管直徑、混凝土彈性模量、橫撐布置、拱肋段混凝土長度、吊桿形式對自振特性的影響，最後考慮了斜拉索局部振動對自振特性的影響。
  2. The aeronautic weapon project is a kind of special project. it has characteristics of hi - technology, high investment, high risk, and long cycle etc. generally total lifecycle of aeronautic weapon embraces project demonstration, project design, project development, design conformation and production conformation stage, there are a large number of risks during each stage, the quality of aeronautic weapon project risk management directly influences the result of the aeronautic weapon project. how to identify every risk and analyze the influence of risk factors in different stage directly affects the result of risk management

    航空武器裝備項目是一種特殊項目，它具有高科技、高投入、高風險、長周期等特徵，一般地，航空武器裝備全壽命周期包括項目論證、方案設計、工程研製、設計定型和生產定型階段，在每個階段里都存在著大量的風險，對航空武器裝備項目風險管理的好壞直接影響著航空武器裝備項目的成敗，而如何準確識別各階段面臨的風險以及分析不同階段各風險因素的影響程度直接影響著風險管理的效果。
  3. According to the movable condition, divided the pipe into the totally restrained pipe and the partly restrained pipe. put forward the conception and count ways of the most friction extens for no compenstate buried pipe

    根據管道的滑動狀態，將管道分為錨固段和滑動段，提出了無補償直埋最大摩擦長度的概念和計算方法。
  4. 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。
  5. On the downstream side, no fitting should be closer than 21 / 2 pipe diameters from the flow measurement device. ( five pipe diameters are preferred

    在下游段，距離流量測量裝置2 . 5倍管道直徑長度內不應該有連接件。 （最好是五倍管道直徑長度內） 。
  6. The experiment of condensation of steam in the presence of air was performed in a single vertical tube in a closed system consisted of the condenser tube, boiler, condensate separator drum, and connection lines from the boiler to the condenser tube

    在中壓迴路上進行單根豎直管內的蒸汽冷凝實驗。冷凝段的主要幾何參數為：冷凝管內徑為0 . 049m ，外徑為0 . 055m ，長度為3 . 5m ；外套管內徑為0 . 067m 。
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