In the first 15 minutes, makes a concrete area completely soaked 3-4 times.

在最初的15分钟内，使有混凝土的区域完全浸透3 - 4次。

youdao

In the first 15 minutes, makes a concrete area completely soaked 3-4 times.

在最初的15分钟内，使有混凝土的区域完全浸透3 - 4次。

youdao