发布时间:2025-02-01 01:33:23
一般浇完砼在三天后张能砌砖,如工程急第二天就能干,因为混凝土四小时就开始初凝,但要注意不要有大的振动。
我陕西西安的我们工厂想买工业加湿器选高压微雾加湿器还是选超声波加湿器各自特点是什么
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