| 单词 | master switch |
| 释义 | > as lemmasmaster switch master switch n. ΚΠ 1907 A. Hay Introd. Course Continuous Current Engin. xvi. 284 A small switch which is arranged to control simultaneously a number of larger switches is spoken of as a master switch. 1985 Salter's Catal. 1985–6 199/2 Deluxe pocket memo with four-position masterswitch. < as lemmas |
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