Strip rolling is a complicated nonlinear process. If strip material property or processingvariable value is changed, process model will be changed.
带钢轧制是一个复杂的非线性过程，带钢原料性质、处理量变化等也会导致过程模型发生变化。
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For processingvariable length packet, current routers usually separate the packet into the smaller fixed-size one before buffering, or simply provide the packet with a fixed-length buffer.
Most programming languages have something called an assert-a statement that stops the processing when a certain condition is met, such as an unexpected value in an important variable.