他换掉了一个无用的电子管。
电脑显示器的电子管可比小小的灯泡能装多了。
A computer tube can hold a lot more gasoline than a lightbulb.
我会用粘胶把这些电子管粘起来。
I would use a cohesive glue to weld the tubes to each other.
在电子管中，有一个电子发射源。
电子管和晶体管能放大输入的信号。
晶体管和电子管相比有许多优点。
本文论述晶体管与电子管相比的优点。
This paper deals with the advantages of transistors over electron tubes.
为此，研制了新的电子管。
具有直接或间接加热的阴极的电子管三极管。
阳极电子管中的阳极。
具有直接或间接加热的阴极的电子管五极管。
具有直接或间接加热的阴极的电子管四极管。
第二代机器使用改良的微电子管和后固体电路。
The second generation of machines utilized improved miniature electronic tubes, and later solid-sate circuits.
比较晶体管变频器与电子管变频器的主要区别。
Main differences between transistor converters and vacuum tube converters are compared.
晶体收音机的结构不像电子管收音机那么复杂。
A crystal receiver is a less complicated structure than a valve receiver.
电子学的范围包括电子管、晶体管和集成电路等。
The field of electronics includes the electron tube, transistor, integrated circuits and so on.
从电子管中产生出一门格外强劲而短暂的战时工业。
Out of the electronic tube has come one particularly tough little war baby.
半导体装置也称为晶体管，在许多场合替代电子管。
Semiconductor devices, called transistors, are replacing tubes in many applications.
从电子管中产生出一门格外强劲而短暂的战时工业。
Out of the electronic tube has come one particularly tough little war baby .
本报告总结了电子管、半导体和元件三方面的新成就。
This report summed up the new achievements made in electron tubes, semiconductors and components.
电视塔的上一次改造在2002年，设备由电子管更新为晶体管。
The last transformation at the tower was done in 2002, when equipment was changed from tube to transistor.
比如说，如果能用‘可控电子管’这种说法，就不要用‘晶体管’。
You don't say 'transistor' when you can use 'controllable electronic valve' -that sort of thing.
电子管通常用来放大，而真空管则是电子管的另一名称。
An electron tube is generally used for amplification, and vacuum tube is another term for this device.
我每次更换后级电子管的时候是不是必须把前级管也一起换？
Do I need to replace my driver tube every time I replace my power tubes?
速调管一种用速度调节的方法放大或产生超高频率的电子管。
An electron tube used to amplify or generate ultrahigh frequency by means of velocity modulation.
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。
Small size and low power consumption are the two important factors that make transistors preferable to electron tubes.
第一代电子计算机使用电子管和其他元件，这使设备又大又笨。
The first electronic computers used vacuum tubes and other components and this made equipment very large and bulky.
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。
An electrode used in certain electron tubes to provide secondary emission.
拖到绘图页后，可以添加具有直热式或旁热式阴极的电子管五极管。
Drag onto the page to add a tube pentode with directly or indirectly heated cathode.
拖到绘图页后，可以添加具有直热式或旁热式阴极的电子管五极管。
Drag onto the page to add a tube pentode with directly or indirectly heated cathode.
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