The emergency generator is not only reliable but also easy to operate and maintain.
应急发电机不仅性能可靠而且操作与维护也很方便。
It is easy to operate the operation of the program and need not to know the detail about computer.
程序运行操作方便，不要求操作人员具有计算机方面的知识。
Themethod is easy to operate and need not equip any complex instrument.
本法操作简便，不需要复杂的仪器设备，便于普及推广。
Themethod is easy to operate and need not equip any complex instrument.
本法操作简便，不需要复杂的仪器设备，便于普及推广。
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