The type of explosive used, rock properties, and method of loading and sequence of firing the holes, affect hole depth, diameter, alignment and spacing.
采用的炸药的类型、岩石的特性、装岩方法、各个钻孔的起爆顺序，这些都影响着钻孔深度、直径、排列和间距的确定。
A drawer-type furnace for firing ceramics, especially large ceramic artworks, contains 6-12 nozzles, each having gas mixer, small combustion chamber and fire bulkhead with hole.
一种抽匣式窑炉，在窑内有6―12个燃烧喷嘴，每个喷嘴都有燃烧混合气器、小燃烧室及带孔挡火板。
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