electric incandescent lamp
frosted incandescent lamp
incandescent lamp
白炽灯
白热光
白热灯
炽热灯
防爆白炽灯
白热电灯
入射角
钨丝灯
可燃性
钨丝灯泡
Incandescent lamp filament
Phase-out inefficiency incandescent bulb
vacuum incandescent bulb
vacuum incandescent lamp
coiled filament lamp bulb
electric bulb & lamp holder
gas-filled dual coil lamp bulb