crack of the roof 顶板断裂
The rain is leaking in through a crack in the roof.
雨正从屋顶上的缝隙漏进来。
He looked through the crack of the broken roof and saw six thieves busy dividing loot among them.
他从破损的屋顶裂缝看进去,发现有六个小偷正忙着分赃;
If they are used as rigid water - proofing roof, impermeability floor slab, road and crack...
用作刚性防水屋面、防渗楼板、路面、缝隙处理等均可收到良好的技术经济效果。
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