double-coiled lamp 双线绕式电灯

coiled coil lamp 迭簧丝灯泡 ; 叠螺旋灯丝灯泡

coiled-coil lamp 叠螺旋灯丝灯泡 ; 螺线式灯丝灯泡

coiled filament lamp bulb 卷丝灯泡

coiled d lamp 卷丝灯

Coiled-up filament lamp 螺旋灯丝灯

coiled d filament lamp bulb 卷丝灯泡