盘簧

RF系列弹簧平衡器是我公司采用国外先进工艺．自行设计制造的一种与操作工具配套使用的辅助工具，该系列产品借助卷簧积蓄的能量，使所悬挂的操作工具处于无重状态，大大降低了操作工人的劳动强度，提高了劳动生产效率。

choke coil

blow-out coil

transformer, choke coil step switch

Helmhotz coil phase shifting cir-cuit

deflecting focusing coil for camera tube

inductance, transformer, coil winding machine

random coil

submerged coil condenser