When when mixed proportion exceeds more than 20%, choose this pump, need entering even more to the water conservancy characteristic.
当混合比例超过20%以上时，消防泵则选择该泵时，试压泵需要对水力特性进行更新。
When when mixed proportion exceeds more than 20%, choose this pump, need entering even more to the water conservancy characteristic.
当混合比例超过20%以上时，消防泵则选择该泵时，试压泵需要对水力特性进行更新。
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