针对混凝土竖孔空心砌块存在的热、渗、裂等问题，本文提出并研究了一种混凝土横孔空心砌块。
There are many problems existing in the engineering application of concrete vertical-hole hollow block masonry, for instance poor thermal insulation, seepage and crack.
介绍了外火箱矩形竖窑进火孔改造前的使用情况以及改造的必要性；
This article introduces the application of fire entry hole of rectangle kiln with outer fire box before reconstructing and the necessity of reconstruction.
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