如果使用真空管，这些计算机就会又大又笨。

These computers would be very large and bulky if vacuum tubes were used.

虽然真空管有这些优点，它不稳定且体型笨重。

But despite these advancements, vacuum tubes were unreliable and bulky.

这些硅晶开关比用于早期电路的真空管要小得多.

These silicon switches were much smaller than the vacuum tubes used in early circuitry.

而我们通常把这种使用真空管的计算机称为第一代计算机。

We usually use vacuum tubes such as the first generation of computer computer.

真空管体积大且发热严重，因此第一代计算机体积庞大，并且需要大量的空调设备保持冷却。

Vacuum tubes are bulky and produce a lot of heat, so first-generation computers were large and required extensive air conditioning to keep them cool.

艾希比总结了自己那些用真空管造出迷你模型的试验，得出了这样的结论：如果一个模型过于急切地简化了复杂现象，它就会错失目标。

Ashby concluded from his own experiments in making minimal models out of vacuum tubes that if a model simplifies the complexity too steeply, it misses the mark.

盘表控制进入真空管空气流量。

The driver used the dial mounted on the dash to control the flow of air into the vacuum chamber.

真空管是这种机器的主要零件.

Electron tubes are the main component for this machine.

阀门用于接通或者堵截真空管途中的气流。

It is used to put through or cut off the air passage in vacuum pipeline.

真空管是二极管的前身，在一个真空玻璃管内放置两个电极。

Its early form, the diode, consisted of two electrodes in an evacuated glass container.