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鉆孔
詞典解釋：◎鉆孔zuānkǒng(1)[drill](2)通常指用尖銳的旋轉(zhuǎn)工具在堅(jiān)硬的物體上鉆穿在木板上鉆孔在數(shù)處給一塊金屬板鉆孔(3)用鑿巖機(jī)(在堅(jiān)固材料中)鉆孔洞在花崗巖上鉆孔(4)[perforate]∶指為了裝飾、識別或便于分開而(常用機(jī)器)打一排小孔或花樣形似獨(dú)木舟有時鉆孔作為垂飾的船形寶石
