Because during the real quenching process, complicated physical phenomena will occur inside test-pieces and quenching mediums, for instance, the medium flow field and the temperature field, microstructure field and .
在实际淬火过程中介质和试件内部都会发生十分复杂的物理现象，介质流场、试件的温度场、显微组织场和内应力场等都随时间发生剧烈变化。