如果水进入岩石裂缝，并发生冻结，冰产生的压力能够使岩石裂开。
If water gets into a crack in rock and freezes, the pressure of the ice can break the rock open.
微胶囊，微囊体小团胶囊，在压力、溶解或熔化时决裂开释出所含物质。
A small, sometimes microscopic capsule designed to release its contents when broken by pressure, dissolved, or melted.
灌浆凝结时，仍有足够弹性，避免围堰因压力而裂开。
When the liquid sets, it will remain flexible enough to prevent the structure from cracking under pressure.
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