工作台simple-table-with-weldment-1.snapshot.1--sw stp igs
G050610-simple-right-hand-side-propeller-1.snapshot.1=螺旋桨
G076095-A Simple One-Step Gear=齿轮变速箱减速机差速器
G076746-simple-gear--2.snapshot.1=齿轮变速箱减速机差速器
G076745-Simple Pulley,belt and gear mechanism for engineering drawing practice=齿轮变速箱减速机差速器