| 单词 | electron tube |
| 释义 | electron tube【电】 电子管 electron tube electron tube n.（名词）A sealed enclosure, either highly evacuated or containing a controlled quantity of gas, in which electrons can be made sufficiently mobile to act as the principal carriers of current between at least one pair of electrodes.电子管：一种密闭的容器，或真空或包含一定的气体介质， 在其内电子能迅速移动以作为至少一对电极间的主要电流载体 |
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