pantograph
击弦类乐器 hammered string musical instrument 集电弓 pantograph (transportation) 集电弓 pantograph (transportation), pantograph ..
bow collector
... brush collector 集电刷,集流刷... bow collector 集电弓 soot collector 集灰器 ...
bow pantograph
... bow collector 集电弓 bow pantograph 集电弓 bow 滑板弓架 ...
collector bow
... collector barrier 集电极势垒,集电极位垒 collector bow 集电弓 collector capacitance 集电极电容 ...
集电弓的得名,因为菱形集电弓的形状从侧面看好像是张开的弓而名。集电弓的英文名称源自缩放仪(Pantograph),是一种外貌及结构都与菱形集电弓极为相似,用来放大、缩小或临摹图样的复写工具