摘要
对投影机亮度变暗的原因与维修、维护的范围及效果进行了分析,提出了维护、维修的方案及成本预测.
This article analyses the causes of making projector's luminosity darkling and introduces their maintenance ranges and effect and brings forward their schemes of maintenance and their cost.
出处
《中国教育技术装备》
2004年第7期43-44,50,共3页
China Educational Technology & Equipment
关键词
教学投影机
亮度
维护
维修
成本
projector
luminosity
maintenance
scheme
cost
