The flame-proof oil and gas recovery vacuum pump has the advantages of small volume, 40%smaller than an oil and gas recovery vacuum pump of the same flow which is provided with a motor.
本实用新型的优点是体积小，它的体积比同流量自带电机油气回收真空泵小百分之四十；
The flame-proof oil and gas recovery vacuum pump has the advantages of small volume, 40%smaller than an oil and gas recovery vacuum pump of the same flow which is provided with a motor.
本实用新型的优点是体积小，它的体积比同流量自带电机油气回收真空泵小百分之四十；
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