Start-up process is a kind of complicated dynamic variation system, which exists not only continuous dynamic variables but also gone with discrete logic variables.
化工开停车过程是既有连续动态变量，又有离散逻辑变量的复杂动态变化系统，混杂现象普遍存在于流程生产工业中，目前对其进行的研究刚刚起步。
Discrete logic, microprocessors, and microcontrollers easily cover the digital portions of control schemes, such as limit switches, pushbuttons, and signal lights.
离散逻辑、微处理器和微控制器可以很容易使用控制方案的数字部分，例如：限制开关、按钮和信号灯。
Introducing temporal logic in discrete mathematics and foundations courses offers some tools to reason about concurrency.
在离散数学和基础课程中引入时态逻辑令一些工具能处理并行。
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