Applicable to acid (except vaporish acid),alkali, ammonia, vapor, oil, organic solvent ,chemistry corrosiveness, filling airtight of rotary pump.
适用酸（除发烟硫酸外）碱，，氨，蒸气，油品，有机溶剂，化学腐蚀性介质的各种旋转泵，阀门的填料密封。
Rotary pump
英语例句库
英语百科
Rotary vane pump
（重定向自Rotary pump）
A rotary vane pump is a positive-displacement pump that consists of vanes mounted to a rotor that rotates inside of a cavity. In some cases these vanes can have variable length and/or be tensioned to maintain contact with the walls as the pump rotates. It was invented by Charles C. Barnes of Sackville, New Brunswick, who patented it on June 16, 1874.
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