1·Transistors have several advantages over electron tubes.
晶体管和电子管相比有许多优点。
2·This paper deals with the advantages of transistors over electron tubes.
本文论述晶体管与电子管相比的优点。
3·An electrode used in certain electron tubes to provide secondary emission.
中间极，二次发射电极一种用于一定电子管作第二次发射电极。
4·Liquid crystal displays (LCDs) have replaced electron tubes in desk-top PC minitors.
在台式电脑的显示器中，液晶显示屏已经取代电子显像管。
5·The report summed up the new achievements made in electron tubes, semiconductors and components.
这篇报告总结了电子管、半导体和元件三方面的成就。
6·This report summed up the new achievements made in electron tubes, semiconductors and components.
本报告总结了电子管、半导体和元件三方面的新成就。
7·It reacts explosively with cold water and is used to scavenge traces of oxygen and other gases in electron tubes.
铯遇水发生爆炸性反应，极易与氧化合，因而被用作电子管的吸气剂。
8·Small size and low power consumption are the two important factors that make transistors preferable to electron tubes.
体积小和消耗功率低，这两个重要因素使晶体管比电子管优越。
9·Branch of science that deals with the study and application of electron devices, e. g., electron tubes, transistors, magnetic amplifiers, etc.
关于电子器件(例如电子管、晶体管、磁放大器等)的研究与应用的一门科学分支。
10·The electron back bombardment phenomenon, which results in anomalous increase of gun current emission, has been observed in a series of our side coupled standing wave accelerating tubes.
在以半腔为首腔的边耦合驻波加速管中观察到了电子反轰现象，由于电子反轰的结果，导致电于枪发射电流非正常增长。