...类；以流体混合动力来区分， 则有气动式(compressed air)、内部移动物件(internal moving parts)及外部抽水式(external pumping)等三种 [1]。
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External pool pumping 站外水坑抽水
Additionally, the influence of such factors as disordered medium, pumping sources and external environment on the lasing threshold is discussed.
并研究了随机介质、泵浦源以及外部环境等因素对随机激光阈值特性的影响。
Because of the change and difference of external condition, practical operating mode of pumping station always deviates from the design's more or less.
由于外界条件的变化与差异，泵站的实际运行工况总是或多或少地偏离设计最佳工况。
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