The second pipe was set vertically, with a U-shaped section cut out of one side of the bottom end to mate with the horizontal pipe.
第二根管子倒竖，用一个U型的被切去底部的一边的部件跟平躺的那个管子并排。
The second pipe was set vertically, with a U-shaped section cut out of one side of the bottom end to mate with the horizontal pipe.
第二根管子倒竖，用一个U型的被切去底部的一边的部件跟平躺的那个管子并排。
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