signal-box是什么意思-signal-box英文怎么读-英汉词典翻译

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英['sɪɡnəlb'ɒks] 美['sɪɡnəlb'ɒks]

名词 signal box:

a building from which signals are sent to control the movements of railway trains

用作名词 (n.)

The term propagation-delay refers to the average time it takes the input signal to propagate to the output.
传导延时这一概念就是指从输人信号到输出信号所经历的平均时间。
The amount of energy needed to send a signal is so astoundingly small that electricity had to be reimagined as something altogether different from power.
因为，发送一个信号所需的能量小得令人不敢相信，以至于电必须被想象成某种完全不同于能量的东西。

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