单词 | pressel |
释义 | pressel/ˈprɛsl/noun An electric switch that is operated by a push-button; (originally) one hanging from the end of a length of flexible wire; (in later use) especially one on a piece of radio communication equipment, typically permitting transmission when depressed and reception when released. Now chiefly pressel switch. OriginLate 19th century. Origin uncertain; probably from press + a suffix of uncertain origin (perhaps -el or -el), perhaps after tassel. |
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