Electrostatic electron lens
[电] 静电电子透镜
🧩 词语组成解析
n. 透镜,镜头;眼睛中的水晶体;隐形眼镜;汽车的灯玻璃;
🗣️ 情景例句
What are some places of interest to visit there?
那儿有什么有趣的地方可以参观的吗?
What do you want to be when you grow on?
当你长大以后,你想做什么?
The study of custom can be profitable only after certain preliminary propositions have been accepted,
只有在某些基本的主张被接受下来、同时有些主张被激烈反对时,
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