英语词汇“countersink”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-新都网

单词	countersink
释义	Word Frequency countersink (ˈkaʊntəˌsɪŋk) verbWord forms: -sinks, -sinking, -sank or -sunk (transitive) 1. to enlarge the upper part of (a hole) in timber, metal, etc, so that the head of a bolt or screw can be sunk below the surface 2. to drive (a screw) or sink (a bolt) into such an enlarged hole noun 3. Also called: countersink bit a tool for countersinking 4. a countersunk depression or hole
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