The governing object function and two boundary condition: settlement and foundation bearing capacity are developed in the optimization design of the PCC pile composite foundation.
建立了PC C桩复合地基优化设计的目标控制函数和两个约束条件：沉降控制条件和承载力校核条件。
A three-phase asynchronous motor is taken as a research object. From the crux of a motor speed governing, the vector control of the asynchronous motor is studied.
以三相异步电动机为研究对象，从电动机调速的实质出发，对异步电机的矢量控制进行了研究。
A three-phase asynchronous motor is taken as a research object. From the crux of a motor speed governing, the vector control of the asynchronous motor is studied.
以三相异步电动机为研究对象，从电动机调速的实质出发，对异步电机的矢量控制进行了研究。
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