safety switch
noun
1 Railways (chiefly US ) = catch-point (now historical ).
2A switch which cuts the power to a machine or appliance in case of emergency.
Origin
Mid 19th century; earliest use found in The London Journal of Arts and Science.
| 单词 | safety switch |
| 释义 | safety switchnoun 1 Railways (chiefly US ) = catch-point (now historical ). 2A switch which cuts the power to a machine or appliance in case of emergency. Origin |
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