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Abstract: Some methods,such as techniques of the high performance concrete,optimization of concrete proportion,usage of effective maintenance,are applied to control and avoid the generation of crack in concrete. 文摘:采用高性能混凝土技术，优化混凝土配合比，采用有效的养护措施，控制和避免混凝土裂缝的出现。
There is a crack in this window. 这扇窗户上有个裂纹。
Close examination revealed a crack in the vase. 花瓶经仔细检查发现有裂缝。
The wind whistled through a crack in the door. 风从门的裂缝中呼呼地刮了进来。
The bricks are bedded in concrete. 用混凝土砌砖。
A fine crack in a surface or glaze. (陶瓷器)表面的裂缝
The workers embedded the big posts in concrete. 工人们把这些粗梉子埋置在水泥中。
They wormed their way out through the crack in the wall. 他们好不容易才从墙上的裂缝处爬了出来。
The garage mechanic find a crack in the back axle of the car. 汽车修理厂的机修工发现汽车的后车轴上有一条裂缝。
This paper analyzes the situation of cracks in concrete of shiplock's chamber wall, summarizes relevant preventive measures, and proposes treatment schemes for the existed cracks. 摘要分析船闸工程闸室侧墙混凝土裂缝的状况，总结预防此类裂缝发生的措施，对裂缝提出处理方案。
As for different projects, suitable surface heat preservation measures should be selected by numerical simulation so as to reduce the probability of cracking in concrete. 对于不同的工程，应通过数值仿真计算选择适合本工程的表面保温措施，以减小混凝土开裂的可能性。
Snow sifted through the crack in the roof into the room. 雪从屋顶上的裂缝飘进屋里。
The garage mechanic found a crack in the back axle of the car. 汽车修理厂的机修工发现汽车的後车轴上有一条裂缝。
Analysis and Prevention of Crack in Concrete Basement Wall 地下室混凝土外墙的裂缝分析及预防
The steam found a vent through a crack in the pipe. 蒸气从管子的裂缝漏出去。
The builder bedded the flagstones in concrete. 建筑工人用水泥砌牢石板。
Steam puffed up from a crack in the metal. 蒸气从金属缝隙中冒出来。
There must be a little crack in the Brooke family. 布鲁家的人神经一定不太正常。
The reactor is encased in concrete and steel. 核反应堆由钢筋混凝土围住。
Dust blew through every crack in the room. 灰尘随风从每个裂缝钻进房间里。