卷扬式启闭机
Hoisting hoister
检测标准
埋刮板输送机
En-masse conveyor
带式输送机
Belt conveyors
技术制图 标题栏
Technical drawings-Title blocks
管道元件 公称压力的定义和选用
Pipework components-Definition And Selection of nominal pressure
管道元件 公称尺寸的定义和选用
Pipework components-Definition And Selection of nominal size
短周期电弧螺柱焊用无头焊钉
Unthreaded stud for short-cyele drawn are stud welding
滑动轴承 半圆止推垫圈 要素和公差
Plain bearings-Pressed bimetallic half thrust washers Features and tolerances
储能焊用无头焊钉
Unthreaded studs for capacitor discharge welding
机械密封产品型号编制方法
Method of type establishment for mechanical seals
