| 单词 | guard ring |
| 释义 | guard ring in British Englishnoun 1. Also called: guard, keeper ring jewellery an extra ring worn to prevent another from slipping off the finger 2. an electrode used to counteract distortion of the electric fields at the edges of other electrodes in a capacitor or electron lens guard ring in American Englishnoun a ring worn tightly in front of another ring to prevent the latter from slipping off the finger Word origin [1810–20]This word is first recorded in the period 1810–20. Other words that entered Englishat around the same time include: liberalism, rationalize, technique, unitary, zombie |
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