The ventilating brick is aslant arranged on the permanent layer at the bottom, and the ventilating surface of the ventilating brick is consistent with the surface of the working layer.

本实用新型所述透气砖倾斜设置在底部的永久层上，其透气面与工作层的表面高度一致。

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The ventilating brick is aslant arranged on the permanent layer at the bottom, and the ventilating surface of the ventilating brick is consistent with the surface of the working layer.

本实用新型所述透气砖倾斜设置在底部的永久层上，其透气面与工作层的表面高度一致。

youdao