“self-tapping screw”的概念、定义、翻译、参考文献-科学参考

单词	self-tapping screw
释义	self-tapping screw [`self ¦tap·iŋ `skrü] ^{DESIGN ENGINEERING} A screw with a specially hardened thread that makes it possible for the screw to form its own internal thread in sheet metal and soft materials when driven into a hole. Also known as sheet-metal screw; tapping screw.
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