以下为句子列表：
英文: Filters should be installed with by-pass and block valves to permit by-passing the filter during element changes if the stream cannot be shut down to allow element changes.
中文: 如果支流不能被关闭而允许元素改变，则在元素改变过程中,应该在过滤器上安装旁通阀和截断阀,从而允许元素从旁路绕过过滤器。
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英文: In the end, collapsing process of a water column impinging an upright wall after by-passing a set of perforated blocks is simulated by using the MPS model.
中文: 运用该模型模拟了水柱倒塌后有无透空块体两种情况下右端直墙上的压力过程。
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