RD(Roof Drainage)

用法例句

On the basis of discussions on the energy-saving designs of the flat roof,sloping roof,roof greening,storage roof and controllable glass roof,this paper analyses some relevant problems of roof energy saving,so as to attain further the purpose of energy-saving building on the promise of artistic modeling.

通过对平屋顶、坡屋顶、屋顶绿化、蓄水屋顶、可控性玻璃屋顶等的节能设计探讨,分析了屋顶节能的有关问题,以求在造型美观的前提下,更好地达到建筑节能的目的。

The roof dropped in on us

屋顶坍落在我们身上。

When did the roof cave in?

屋顶是什么时候坍塌的？

The roof threatened to fall in.

屋顶有坍塌的危险。

We must do something to keep the roof from falling in.

我们必须设法防止屋顶坍塌下来。

The roof is dangerous and could cave in at any time.

屋顶很危险，任何时候都会坍塌。

The ceiling collapsed and rubble poured into the room.

天花板坍塌了, 碎砖破瓦掉落到了屋里.

A few drops of rain landed on the roof.

几滴雨水落在了屋顶上。

The roof was blown off in several sections which landed at both front and back of the house.

屋顶成几块，落在房屋的前后。

slump [concrete paste]

坍落度〔混凝土浆〕

Rain spattered down on the roof.

雨滴滴嗒嗒地落在屋顶上。

A vertical pipe for carrying rainwater down from a roof gutter.

水落管从屋顶水槽接下的竖直导水管

All walls are great, if the roof doesn't fall!

所有的墙都很伟大，只要屋顶不会塌落！

Props were used to prevent the roof collapsing.

用了一些支柱以防止屋顶塌落.

Hailstones rattled on the tin roof.

冰雹落在铁皮屋顶上发出砰砰声.

The hail rattled on the roof.

冰雹霹雳啪啦地落在屋顶上。

At that moment the cow went sliding off the roof.

就在那个时候，乳牛从屋顶滑落了下去。

The roof of the old house collapsed.

这座旧房子的房顶坍了。

The roof of the tunnel caved in (on the workmen).

隧道顶坍塌（压住工人）.