双语例句
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The results reveals that the conventional design is not suitable for designing a very low ns volute pump and a new design is presented.
结果表明，低比转数蜗壳泵不宜采用常规设计，进而提出了一种新的设计方法。
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The unit shall be field convertible to a portable pump by means of removal of the guide bracket from the pump volute, without modification.
这种泵设备应该能够在现场转换成轻便泵，不需要进行改型，只要通过拆卸泵涡壳上的导轨支架就可以做到。
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Pump volute - shaped shell made many, it is also called the volute.
泵壳多做成蜗壳形，故又称蜗壳。
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