【Daily Discussion】Public Utilities – Water Resources and Hydropower – 20210125

2021-01-25View Original

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The particle sizes of the materials in each layer of the filter layer are arranged from largest to smallest in the direction of seepage. Is this sentence correct? We welcome active participation in discussions; the system offers generous rewards for answering questions from VIP members! ! !

Reply #22021-01-25

Correct, if the one in front is small and the one behind is large, then the large one is useless

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【Daily Discussion】Public Utilities – Water Resources and Hydropower – 20210125

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