We just use the entry of 2nd floor as a bird entryhole.
我们直接用二楼的进口处当进鸟洞。
2
This article introduces the application of fire entryhole of rectangle kiln with outer fire box before reconstructing and the necessity of reconstruction.
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；
3
The punch includes an end portion adapted to Pierce an entryhole and bend material around the entryhole to form a retained slug along an inner edge of the entryhole.