vacuum incandescent bulb
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
microwave vacuum drying combined with vacuum drying
non-perturbative QCD vacuum and vacuum condensate
vacuum dryer =vacuum drier
vacuum drying plant and vacuum freeze drying plant
126 kV double-break vacuum circuit breaker
20 kV outdoor on-post vacuum circuit breaker
24 kV outdoor high-voltage AC vacuum circuit breaker