退化是从灵魂向物质的降落。
In order-reversing involution, complete lattice is calculated and general Pawlak operator is deduced.我们将这种算子推广到具有逆对合对应的完备格上。
The quality of the involution is the key factor to affect the quality of metallic capacitor component.自动卷绕机的卷制质量是影响金属化电容器元件质量的关键因素。