定位销定位精度设计
The orientation precision design of pin
不锈钢钉
stainless steel lag screws
不锈钢钢笔
fountain pen with stainless steel nib
不锈钢-钢复合板
stainless steel steel clad plate
不锈钢钢丝绕制筛管
stainless steel wire wrapped screen
不锈钢螺纹管
stainless steel screwed tube
不锈钢螺旋板
stainless steel spiral plate
高氮奥氏体不锈钢钢
high nitrogen austenitic stainless steel