Most electronic tubes are vacuums.
多数电子管是真空的。
The second generation of machines utilized improved miniature electronic tubes, and later solid-sate circuits.
第二代机器使用改良的微电子管和后固体电路。
This paper mainly talks about the effect of hidden troubles with television transmitters on electronic tubes, and also comes up with some solutions according to the experience.
对电子管电视发射机几种隐性故障影响电子管寿命进行了探讨，并结合实践给出了解决问题的经验和方法。
The electromagnetic machine remained in use until 1959, by which time it was left in the dust by true electronic computers using first vacuum tubes, then transistors, then chips.
这台电磁式机器一直使用到1959年，然后就被遗弃在灰尘中，因为到了那个时期，首先使用电子管、接着晶体管、然后集成电路芯片的真正电子计算机先后问世。
The first electronic computers used vacuum tubes and other components and this made equipment very large and bulky.
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。
First-generation computers were characterized by the use of vacuum tubes as their principal electronic component.
第一代计算机的特色是使用真空管为其主要电子器件。
Now we finally come to electronic instruments. In these instruments sounds are produced by varying the oscillations of radio tubes with the exception of the Hammond organ.
现在该说说电子乐器了。除哈蒙德电风琴，这类乐器全是靠变换无线电真空管振荡而发声的。
Main Purpose: spark plug, electronic substrate, electric vacuum tubes, ceramic boby, etc.
主要用途：火花塞、电子基片、电真空管、电子陶瓷基体、高级耐火材料等。
Method The automatic ventilation and gas exchange system consisted of 2 electronic modulators, alternating current contactor, 1 switch, 1 oxygen meter and some seamless steel tubes.
方法自动通风换气系统由2个电动调节阀、1个交流接触器、1个开关、1台测氧仪、少量无缝钢管组成。
Method The automatic ventilation and gas exchange system consisted of 2 electronic modulators, alternating current contactor, 1 switch, 1 oxygen meter and some seamless steel tubes.
方法自动通风换气系统由2个电动调节阀、1个交流接触器、1个开关、1台测氧仪、少量无缝钢管组成。
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