... How long do we stop at Chicago 我们在芝加哥停多久? Is this train on time 这班火车准时吗? How late are we 我们晚点了多久? ...
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这班火车准时吗?
This is more than filling in the time that would be spent sitting on a train.
这不只是如何打发坐火车的时间。
Level dropout: This detects an edge followed by a specified time with no edges. It is useful for triggering on the end of a pulse train.
水平失真触发:当信号变高或者变低,并保持此状态超过指定时间时触发。这是很有用的对于脉冲串的末端触发。
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