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一、问题的提出2003年学校给我们语音室安装了2套NEC-MTl060~+型投影机,其灯泡价格昂贵(单价:2000～3000元),且正常工作寿命只有2000h,于是,千方百计保证灯泡正常工作成了我们语音室日常管理的重心。而今3年过去了,2台投影机的原配灯泡依然正常地在工作。现将我们的做法归纳如下。二、灯泡的工作状态投影机工作时,其灯泡的工作温度和内部压力是相当大的。卤素灯泡的工作温度有近1000摄氏度.内部压力高达20000KPa,所
First, the problem raised in 2003 School installed two sets of NEC-MTl060~+ type projectors for our language lab. Its light bulbs are expensive (unit price: 2000 to 3,000 yuan), and the normal working life is only 2000 hours, so we try to do everything possible to guarantee bulbs. Normal work has become the focus of day-to-day management of our language lab. Three years later, the original light bulbs of the two projectors are still working. We summarize our approach as follows. Second, the working status of the bulb When the projector is working, the working temperature and internal pressure of the bulb are quite large. The operating temperature of halogen bulbs is almost 1000 degrees Celsius. The internal pressure is up to 20000 KPa.