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Wafer-style held in place between two pipe flanges.
平板式（对夹式）：固定在两个管道法兰之间。
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"New two pipe method" is a new way to stop the water in deep foundation pit.
“新二管法”是一种新型的深基坑止水方法。
youdao
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"New two pipe method" is a new way to stop the water in deep foundation pit.
“新二管法”是一种新型的深基坑止水方法。
youdao