The air-jet exhauster is a compressed air-operated device for pump priming, provided that the pump has no foot valve. Water is induced into the pump by vacuum created by the exhauster.

以压缩空气为动力的气体引射器，它是用在无底阀水泵上的抽气引水设备，具有结构简单、加工制做容易、耗气量小、效率高等特点。

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But lower borrowing costs are of little use if politicians remain sceptical about the merits of fiscal pump-priming.

但如果政客们对财政刺激的价值仍持怀疑态度，降低借贷成本并无多大用处。

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But lower borrowing costs are of little use if politicians remain sceptical about the merits of fiscal pump-priming.

但如果政客们对财政刺激的价值仍持怀疑态度，降低借贷成本并无多大用处。

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