Its size and power will forever be useful to man.
它的大小和力量将对人们来说一直有用处。
This is very useful with the following Settings can be the use of air power.
这个是很实用的设置可以配合下面的空气动力使用。
The high power DC source is a useful equipment in industry production.
大功率直流电源在工业生产中是一种常用的设备。
This is useful in power amplifier design.
在功放设计中很有用。
This is useful in power amplifier design.
在功放设计中很有用。
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