boiler return circulating pump
... 锅炉给水泵 boiler feed pump 锅炉回水循环泵 boiler return circulating pump 锅炉酸洗泵 pump for acid washing of boiler ...
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boiler return circulating pump
锅炉回循环泵
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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The design and lectotype of circulating pump, automatic return water switch valve, expansion tank and atmospheric connection pipe in atmospheric hot water heating boiler room are discussed.
对常压热水供热锅炉房的循环泵、回水自动启闭阀、膨胀水箱、大气连通管的设计选型进行了探讨。
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