... open-and-shut controller 开关式控制器 open-and-shut valve 双位开关阀 open-back inclinable power press 后开式可倾压力机 ...
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双位开关阀 openandshut valve ; shut valve 双位开关调整器 onoff two position regulator ; off two position regulator 双位开关控制器 onandoff controller...
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open-and-shut valve
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open-and-shut valve
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