discharge by pump
... discharge bowl==排出筒 discharge by pump==用泵卸车 discharge chamber==放电室,压缩室,排气室 ...
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丁二烯罐车卸车多采用氮气注入罐车加压，同时用离心泵抽液的卸车方法。
Unloading method of injecting nitrogen to tank car to raise pressure and liquid extraction with centrifugal pump simultaneously is often used to unload butadiene tank car.
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