magnifying shape projector
... magnifying shape projector 投影放大仪 lateral magnifying power 放大系数 magnifying device 放大装置 ...
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它是一种特殊的附带设备，放置在标准高射投影仪上方并和个人电脑连接，它可以放大电脑桌面，使观众看得很清楚。
This is a special attachment that sits on top of a standard overhead projector and is attached to a personal computer, making it large enough for easy audience viewing.
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