backspacing中文什么意思

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1. The basic technologic scheme on microwave transmission , currently maturate and advanced microwave transfer technology and equipment , efficiency slot gap antenna , character quality filter , mixer , exact crystalloid concussion apparatus , power backspacing technology , pre - distortion adjustment . furthermore , the technologic schemes practicing using multilevel microwave transfer technology in some areas such as lengshuijiang is introduced in the paper
   采用了当前比较成熟、先进的微波传输技术和设备,如高效的缝隙天线、高品质滤波器、混合器、高精密的晶体震荡器、功率回退技术、预失真校正技术,结合工程实际,设计了湖南电广网络33家合资公司的mmds无线微波数字电视覆盖的基本技术方案,和个别地区(冷水江市数字微波工程)的多级微波传输的具体技术方案。