双语例句
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The hydraulic circuit of the hydraulic motor of a drive fan is provided with a reverse valve.
驱动风扇的液压马达液压油路上装有反转阀。
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Export pump with check valve, it will immediately turn off to prevent reverse flow back high-pressure water pump.
水泵出口装有逆止阀时，它会立即关闭，防止高压水反向流回水泵。
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Purpose: To test valve No. 1 for tightness against reverse flow.
目的：检测1号止回阀对于回流的密封性。
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