... 旋转滑阀 回转阀 revolvingvalve 止回阀,回转阀 swing valve 回转阀键, 回转阀芯 rotary valve key ...
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回转阀芯
Rotary valve core
以上为机器翻译结果，长、整句建议使用 人工翻译 。
回转接头的阀芯和阀套经重新设计和改造后，简化了工艺，降低了成本，为国家节省了大量外汇。
Through the redesign and revamp of the valve disk and body of rotary spindle, the technology is simplified, the cost is reduced and a large amount of foreign exchange is saved for our country.
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