为解决城市双向供水问题，应选用具有良好能量特性和空化特性的水泵。
To solve the problem of two-way water supply to city, we must use this sort of pump that its energy and cavitation characteristics is good.
为解决城市双向供水问题，应选用具有良好能量特性和空化特性的水泵。
To solve the problem of two-way water supply to city, we must use this sort of pump that its energy and cavitation characteristics is good.
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