能实现规模扩张的品牌，大多具备核心原料集中、供应链高效的特点，比如鸡柳大人、蜜雪冰城、新疆炒米粉。米粉和米线赛道差异显著：米线重汤底，米粉重浇头。如今新疆炒米粉已占据米粉赛道的半壁江山，前十名中有五个是新疆炒米粉，剩下的多为螺蛳粉；米线赛道则以蒙自源等云南过桥米线为主。此外，窑鸡王也因原料集中，实现了供应链高效、成本可控，从而支撑规模扩张。
Intel documentation describes the 386's Protection Test Unit as a component that "implements fast testing of complex memory protection functions." It is mostly composed of a PLA (Programmable Logic Array), referred to as Test PLA by Intel, that is physically visible by its regular appearance on the die. This single piece of combinational logic replaces what would otherwise be dozens of multi-cycle conditional branches in the microcode. Instead of testing privilege rules sequentially, the microcode issues a single protection test operation, and the PLA evaluates all applicable rules in parallel, producing a complete decision in one evaluation: continue, fault, or redirect to a gate handler.
，这一点在新收录的资料中也有详细论述
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