The introduces the characteristics of the marine submersible series multiple centrifugal pump developed by the authors.

主要介绍作者研制的船用潜水式串并联离心泵的特点及其结构设计和水力设计中应考虑的问题.

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The course introduces Infinite Series, multiple - variable calculus and its application in economics, Differential equation.

本课程主要介绍无穷级数 、 多元函数微积分及其经济应用, 常微分方程.

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