directioal valve box
... 方向阀箱 directioal valve box 比例方向阀 DIRECTION VALVE 方向阀的 sliding spool ...
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本实用新型的优点是能不用阀箱改变气流方向，就能使双喷嘴空气透平波浪发电装置在波浪中发电。
The utility model has the advantages of changing flow direction without the valve box, can make the double-nozzle air turbine wave power generation device generate electricity in the wave.
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