dB 分贝(工程应用),dB(Decibel,分贝)是一个纯计数单位,本意是表示两个量的比值大小,没有单位。在工程应用中经常看到貌似不同的定义方式(仅仅是看上去不同)。…
Both the words mean “occurring at the same time”, but “concurrent” represents the events that occur over a period of time whereas “simultaneous” represents the events that occur at a point in time. https://www.perfmatrix.com/concurrent-users-vs-simul…