英语词汇“robertson screw”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	robertson screw
释义	Robertson screw Robertson screw n (Tools) trademark a screw having a square hole in the head into which a screwdriver with a square point (Robertson screwdriver (trademark)) fits [C20: after its inventor P. L. Robertson (1896–1951), a Canadian industrialist]
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Robertson screw