Cabin condensation piping to be done free - flowing test 房舱凝水、落水管系畅通试验。
2.
Unplasticized polyvinyl chloride eaves gutters and downspouts 未增塑聚氯乙烯檐口滴水沟和落水管
3.
Vertical down pipe 直立式落水管
4.
Do not jump blindly down the building , use ladders , balcony , or ( water holes ) to escape 千万不要盲目跳楼，可利用疏散楼梯、阳台、落水管等逃生自救。
5.
I fell out of a window . . . some friends had a roof terrace on the landing before their apartment , and i fell off the drain pipe 那时我从窗户掉了下去，朋友的公寓有个露台，落水管断了，我从三楼掉了下来。
