When designed, the high - speed generator with a permanent magnet (PM) rotor is preferred because of its simple structure, without excitation high energy density of the PM material.
永磁转子式高速发电机由于具有结构简单、不需励磁、效率高和能量密度大等优点成为高速发电机设计时的首选。
When designed, the high-speed generator with a permanent magnet(PM) rotor is preferred because of its simple structure, without excitation high energy density of the PM material.
永磁转子式高速发电机由于具有结构简单、不需励磁、效率高和能量密度大等优点成为高速发电机设计时的首选。
Objective To study on the trapping efficacy of mosquito magnet, and provide methods for surveying density of mosquito.
目的观察灭蚊磁场诱捕蚊虫效果，为蚊虫密度监测提供依据。
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