延长灯泡寿命
to prolong the life of lamps
拉瓦灯对流模型
Lava lamp convection model
冷光石英水银灯
cold quartz mercury vapor lamp
冷光手术灯
cold light operating lamp
冷光束低压电子投影灯
cool beam low volatage electronic projective lamp
冷光子母无影灯
cold light shadowless primary and secondary lamp