In long pipe line, especially multi-undulate pipeline, the difficulty of prevention water hammer is most difficult.

在长间隔输水管线中，尤以多起伏管道水锤防护难度最大，发生水锤事故最多。

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In long pipe line, especially multi-undulate pipeline, the difficulty of prevention water hammer is most difficult.

在长间隔输水管线中，尤以多起伏管道水锤防护难度最大，发生水锤事故最多。

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