... 回流污泥 returned sludge 回流污泥泵 return sludge pump 对比一下羽毛球的接发球技术混凝土穿孔管 concrete perforhcraigslist add pipe ...
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return sludge pump coupling 回流污泥泵联轴器
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If any of return sludge pumps is in off mode, it will be regarded as standby unit. If fault is found on duty pump, the standby pump will be automatically change over.
没有启动的污泥回流泵作为备用泵，如主泵发生故障，备用泵自动切入。
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