Proper selection and maintenance of projector screen can ensure the multi media projector a good manifestation condition and make images bright and distinct.
正确地选用和维护投影银幕，可以为多媒体投影机提供优良的显示条件，使明亮、清晰的图像得以再现。
Proper selection and maintenance of projector screen can ensure the multi media projector a good manifestation condition and make images bright and distinct.
正确地选用和维护投影银幕，可以为多媒体投影机提供优良的显示条件，使明亮、清晰的图像得以再现。
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