投影器

• Place one of the negative records in the projector object plane .
  将负片记录之一放入投影器的物平面内。
• General technical specifications of video projectors
  视频投影器通用技术条件
• Overhead projectors - projection stages dimensions
  投影器.投影台尺寸
• Factures about experiment transmission projector of gas joule law
  气体焦耳定律实验透射投影器的制作
• Overhead projectors - methods for measuring performance characteristics
  透射式投影器.性能特性.测定方法
• Diagnosis on the troubles of loader hydraulic system and its eliminating methods
  投影器常见故障及排除方法
• Overhead projectors - transparencies and transparency frames - dimensions
  透射式投影器投影片和头影片框尺寸
• - the holographic projector . - right
  -全息投影器-对
• The holographic projector . - right
  全息投影器-对
• Principal distance of projector
  投影器主距