| 单词 | getter |
| 释义 | getter [`ged·ǝr] CHEMISTRY See <<scavenger>> PHYSICAL CHEMISTRY 1. A substance, such as thallium, that binds gases on its surface and is used to maintain a high vacuum in a vacuum tube. 2. A special metal alloy that is placed in a vacuum tube during manufacture and vaporized after the tube has been evacuated; when the vaporized metal condenses, it absorbs residual gases. Also known as degasser. |
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