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由我校中年科技人员王洪录等研制的 DS-1型声面同步幻灯机在长春通过省级技术鉴定。一体化声画同步幻灯机是一类新型的幻灯机,使用这类同步机能够方便地进行声画同步放映,可广泛地应用于电化教学、技术交流、放游导游、广告宣传、产品介绍以及其它部门。这种先进的幻灯机在国外生产的厂家很多,使用巳常普及。由于我国目前尚未有生产这类幻灯机的厂家,少数单位以每台六千元人民币的高价购买国外进口机,以解决急需。多数单位因价格昂贵无力购买,仍采用国产自动幻灯机再配上讯控同
The middle-aged science and technology personnel from our school, such as Wang Hong recorded DS-1-type sound surface synchronous slide projector in Changchun passed the provincial-level technical appraisal. Integrated audio and video synchronization slide projector is a new type of slide projector, the use of such synchronous machine can be easily synchronized sound and picture show can be widely used in teaching, technical exchanges, travel guides, advertising, product introduction and other departments . This advanced slide projector in the production of many foreign manufacturers, the use has always been popular. As China has not yet produced such slide projector manufacturers, a few units to buy high-priced 6,000 yuan each foreign machine imported to address the urgent need. Most units are expensive due to the inability to buy, still using domestic automatic slide projector coupled with the same control