express pump 中文意思是什麼
express pump
解釋
高速泵-
The pump concrete construction technology of double - arch tunnel in express highway
高速公路連拱隧道泵送混凝土施工技術 -
Three mathematical models are presented to express the characteristics based on the systematical analysis of mechanical, hydraulic and fluid dynamic characteristics during three transient process, and numerical calculation methods are carried out to the three mathematical models. with the rigid water hummer theory and hydraulic characteristics, this paper has improved the boundary condition equation at pump during the suspending period, and drew a simplified mathematical model
針對大型低揚程泵站過渡過程的具體特點，利用剛性水錘理論，對事故停泵時泵處的邊界條件方程進行改進，並結合泵裝置水力特性，得出大型低揚程泵站停泵過渡過程簡易計算方法的數學模型；針對具體數學模型編製程序進行計算求解。 -
Learn how to express your breastmilk by hand or breast pump well before you return to work
重返工作崗位前的準備盡早學會用手或用奶泵擠奶。
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