connection pipe
... 接驳排水渠及污水渠条款:connecting drains and sewers clause 接驳喉管:connection pipe 接驳公用设施:utility connection ...
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修补通风喉管与通风格栅/百?风口接驳处的空隙。
Rectify the gap at final connections between air duct and grille / louvre.
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顶部和底部的生死孔适合20毫米及25毫米喉管接驳利于安装。
Knockouts suit 20mm and 25mm conduit connections on both top and bottom to facilitate installation.
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