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直播卫星业务
释义
直播卫星业务
Encyclopedia
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直播卫星
释
Direct Broadcasting Satellite (DBS) Service
直播卫星业务
利用直播卫星开展的卫星视频和音频广播业务,用户或最终用户直接从同步轨道直播卫星接收信号的卫星电视系统,信号以数字格式在微波频率下广播。
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number needed to harm
number needed to treat
number notation
number of a word
number of boundaries
number of checks
number of classes
number of collisions
number of colors
number of columns
number of combinations
number of comment
number of components
number of compositions
number of covering sheets
number of crimes
number of crossings of a graph
number of degree of freedom
number of degrees of freedom
number of divisors
number of domestic tourists
number of domination
number of double points
number of effective plates
number of effective sperms
科学参考收录了854744条科技类词条,基本涵盖了常见科技类参考文献及英语词汇的翻译,是科学学习和研究的有利工具。
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