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| 单词 | four jaw chuck |
| 释义 | four jaw chuck in British English (fɔː dʒɔː tʃʌk) noun another name for chuck2 (sense 2b) chuck in British English 2 (tʃʌk) noun 1. Also called: chuck steak a cut of beef extending from the neck to the shoulder blade 2. a. Also called: three jaw chuck a device that holds a workpiece in a lathe or tool in a drill, having a number of adjustable jaws geared to move in unison to centralize the workpiece or tool b. Also called: four jaw chuck, independent jaw chuck a similar device having independently adjustable jaws for holding an unsymmetrical workpiece Word origin C17: variant of chock |
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