一些屋顶排水沟的挡板式设计打破了排水水流交换落水管，所以它不会削弱地下。
Some roof gutter exchange downspouts for baffle type designs break up the stream of drained water, so that it does not erode the ground below.
屋顶水暖工安装，维护和修理防水板、金属屋顶、墙面表层和防水产品，如水槽和落水管。
Installs, maintains and repairs flashings, metallic roof and wall claddings and rainwater products such as gutters and downpipes.
屋顶水暖工安装，维护和修理防水板、金属屋顶、墙面表层和防水产品，如水槽和落水管。
Installs, maintains and repairs flashings, metallic roof and wall claddings and rainwater products such as gutters and downpipes.
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