“feed screw”的概念、定义、翻译、参考文献-科学参考

单词	feed screw
释义	feed screw [`fēd ´skrü] ^{MECHANICAL ENGINEERING} The externally threaded drill-rod drive rod in a screw- or gear-feed swivel head on a diamond drill; also used on percussion drills, lathes, and other machinery.
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