英语词汇“screw anchor”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	screw anchor
释义	screw anchor screw anchor An anchor (similar to an expansion bolt) having a metal shell with a screw along its central axis; when the shell is placed in a hole and the screw is driven in, the shell expands, tightly securing the anchor in the hole.
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