| 释义 |
mercury-wetted reed switch mercury-wetted reed switch[′mər·kyə·rē ¦wed·əd ′rēd ‚swich] (electricity) A reed switch containing a pool of mercury at one end and normally operated vertically; the contacts on the reeds are covered with a mercury film by capillary action; each operation of the switch renews this mercury film contact, thereby increasing the operating life of the switch many times. |