straight up-and-down filament的意思|示意
美 / /
英 / /
竖直竖直的灯丝
straight up-and-down filament的网络常见释义
锯齿式灯丝 ... up-and-down training apparatus 升降训练装置 straight up-and-down filament 锯齿式灯丝 up-and-down fall 舱口吊货索 ...