单词：glass tube
glass tube的用法和样例：
例句
- In a radio tube there is a source of electrons.在电子管中，有一个电子发射源。
- "A science fiction cannot not be regarded as a mere entertainment, but in fact it tells the reader much more.""科幻小说不能简单地看成是供消遣的，而实际上它给读者展示更深刻的内容。"
- Heat the glass tube to the point that it can bend.将玻璃管加热，以能弯曲为度。
- A glass or quartz tube has tungsten electrodes sealed in each end.两根钨丝电极是封在玻璃管或石英管的两端。
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