发布于：2025-07-06 05:36浏览量：168文/优校网
1.比例画图仪器,缩放仪
2.(类似缩放仪的)动臂装置
3.【电】(电车顶上的)导电弓架
1.a drawing instrument that consists of a set of adjustable interconnected bars forming a parallelogram and is used to copy line drawings or maps to any scale
2.a device shaped like a pantograph and used as a frame or bracket
3.a device on the roof of electric trains and locomotives for picking up electric current from overhead wires