此外，最重要的是生成氯氧化镁膨胀相，棒状晶体在生长过程中吸水定向生长，

In addition, the most important thing is to generate the expansion phase of magnesium oxychloride. The rod-shaped crystals absorb water and grow directionally during the growth process, which increases the internal stress and causes the loss of strength. Continued development will cause expansion cracks of the specimen and seriously damage the integrity of the component.

In addition, the most important thing is to generate magnesium oxychloride expansion phase. The rod-shaped crystal absorbs water and grows directionally during the growth process, which increases the internal stress, resulting in strength loss. Continued development will cause expansion cracking of the specimen and seriously damage the integrity of the component.

In addition, the most important thing is to generate magnesium oxychloride expansion phase, and the rod-shaped crystal absorbs water and grows directionally during the growth process, which makes the internal stress increase, thus causing strength loss, and further development will cause expansion cracking of the specimen and seriously damage the integrity of the component.