吹上下水管 blow down pipes
上下水管
Upper and lower water pipe
以上为机器翻译结果，长、整句建议使用 人工翻译 。
卫生间上下水管与地板接缝。
Bathroom water pipes and floor joints up and down.
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另外还要保护上下水管道。
In addition to protect the upper and lower water pipes.
上下水管道与地面连接处用刷子涂覆施工。
The upper and lower water pipe connected with the ground at the construction coated with the brush.
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