Web18 apr. 2024 · (1)Leading edge=前一个边沿=第一个边沿,对于开始电压是1,那么就是1变成0的时候;对于开始电压是0,那么就是0变成1的时候。 (2)Trailing edge=后一个边沿=第二个边沿,对于开始电压是1,那么就是0变成1的时候;对于开始电压是0,那么就是1变成0的时候。 qwaszx523 4 0 时序分析基本概念介绍<, Trailin g edge > lin :主导的边沿, … Web9 mrt. 2024 · Inadequate inspections are the top cause of escalator accidents. Considering the heavy use that escalators are subjected to every single day, regular thorough inspection and maintenance of escalators is crucial. If inspection is not carried out regularly or it is not performed properly, small faults that get overlooked could cause major ...
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Central–Mid-Levels escalator - Wikipedia
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