| 单词 | contact arm |
| 释义 | contact arm (once / 1181932 pages) n WORD FAMILY contact arm USAGE EXAMPLESIn the dispatcher's master sender the clock-work mechanism operates a contact arm which shows on the face of the sender in Fig. McMeen, Samuel, Cyclopedia of Telephony and Telegra...(2010) A movable contact arm that slides over and presses on the turns of wire is fixed to the knob on top of the rheostat. Collins, A. Frederick (Archie Frederick), The Radio Amateur's Hand Book(2010) n contact consisting of a conducting arm that rotates over a series of fixed contacts and comes to rest on an outlet Syn|Hyper wiper, wiper arm contact, tangency (electronics) a junction where things (as two electrical conductors) touch or are in physical contact |
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