多次作
DBBP530基站系统支持的频段为() ["1880-1920MHZ","2010-2025MHz","2010-2070MHZ","2300-2400MHZ"]
故障后的特殊运行方式下,阻尼比至少应达到()。 ["0.01~0.015","0~0.02","0.02~0.03","0.04~0.05"]
新华保险“132”战略具体指()。 ["一个中心","三个支撑点","两大历史变革","两个历史机遇"]
LNA的主要功能是将来自()的接收信号进行放大。 ["BBU","RRU","NODEB","天线"]
精干麻