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It is important to solve the oil leak for the rotary vane vacuum pump.
解决旋片真空泵漏油是重要的。
youdao
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In this paper, the rotary guide vane nozzle has been studied.
本文针对导叶式旋转射流喷嘴进行研究。
youdao
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In this paper, the rotary guide vane nozzle has been studied.
本文针对导叶式旋转射流喷嘴进行研究。
youdao