| 单词 | switch plate |
| 释义 | > as lemmasswitch plate switch plate n. (a) Railways (chiefly U.S.) (originally) either of the metal plates connected to or supporting a rail of a point, and attached at one end to the rails of the main track; (later) either of the metal plates reinforcing each tie at a point, and running under the rail brace and part of the rail itself (now chiefly historical); (b) any of various plates on or under which a switch may be mounted; esp. a flat cover for the electric wiring of an outlet box. Π 1859 S. C. Brees Railway Pract. 222 (caption) Details of Switch Plate employed for two Lines. 1872 Ann. Rep. Commissioner Patents 1870 II. 742/2 in U.S. Congress. Serial Set (41st Congr., 3rd Sess.: House of Representatives Executive Doc. 89) IX The combination of the screw-cups K N, elastic switch-plate O, plate P, or its electrical equivalent..being arranged substantially as and for the purpose specified. 1898 Electr. Engineer 29 Sept. 324/2 Switchplates are thoroughly insulated from the mechanism. 1953 Pop. Sci. Aug. 155/2 (advt.) Broken plaster around an outlet box that isn't covered by an ordinary switch plate can be easily hidden with this special large-size plate. 1980 Maintenance of Trackage iv. 8/1 Do not permit train movement over main track until..all switch plates on the turnout side have been fully spiked in correct position, [etc.]. 1999 C. Mendelson Home Comforts lxi. 717/1 Are parts of your electrical system—such as switch plates, wall outlet covers, cords, or plugs—warm or..discolored from heat? 2006 S. C. Kirk Itty Bitty Murder 98 The judge monitored the switch plate on the track. < as lemmas |
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