(a) Railways (chiefly U.S.) = catch point, n. (now historical); (b) a switch which cuts the power to a machine or appliance in case of emergency.
| 单词 | θ77625 |
| 释义 | the world > matter > physics > electromagnetic radiation > electricity > circuit > device to open or close circuit > [noun] > allowing cut-off (1) safety switch1940 (a) Railways (chiefly U.S.) = catch point, n. (now historical); (b) a switch which cuts the power to a machine or appliance in case of emergency. |
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