During the cool rolling process of SUS301 stainless steel, the punctual flaws and cracks are offen observed.
SUS301不锈钢在冷轧过程中表面经常出现点状缺陷及裂纹。
The switching circuit is offen used in the pulse digital system. As the switching circuit is acted on by capacitive load, the working speed of the switching circuit is limited.
开关电路是脉沖数字系统中常用电路之一,由于负载电容的影响,限制了该电路的工作速度。
Results Preschool children of the age about 3 years were easy to have hand-food-mouth disease and offen come to collective infection;