closed circuit television equipment
... 闭路电视 closed circuit television 闭路电视设备 closed circuit television equipment 闭路录像 closed circuit recording ...
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The company also engages in research and development of multi-media closed-circuit-television teaching system, multimedia classroom equipment and cable TV system for education industry.
在教育行业专门从事多媒体闭路电视教学系统、多媒体教室设备的研制开发以及专业经销有线电视系统设备的高科技股份制公司。
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