... 锁定装置locking device 运行转速范围operating rotational speed range 临界转速activation rotational speed ...
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工业制冷机组是在温度、压力变化范围较大、转速较大的情况下运行的。
Industrial refrigeration unit is big changes in temperature and pressure range, running speed of the larger situation.
讨论了离心泵的运行转速改变后，由于泵效率和管路效率的变化而给整个果装置效率带来的影响，由此可以判断离心泵改变转速后，泵装置的运行是否合理，并可确定泵装置运行的最佳转速范围。
The influence of the change of centrifugal pump rotating speed on the efficiency of the whole pump-unit which due to the variation of the pump efficiency and pipeline efficiency is studied.
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