... liquid nitrogen cooled detector 液氮制冷探测器 liquid nitrogen pump 液氮泵 liquid nitrogen two-phase flow refrigerator 液氮双相传输制冷器 ...
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NP Liquid nitrogen pump 液氮泵
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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.
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。
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