- Also called: guard, keeper ring an extra ring worn to prevent another from slipping off the finger
- an electrode used to counteract distortion of the electric fields at the edges of other electrodes in a capacitor or electron lens
| 单词 | guard ring |
| 释义 | WordReference Random House Unabridged Dictionary of American English © 2024 guard′ ring′,
Collins Concise English Dictionary © HarperCollins Publishers:: guard ring n
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