... very-low frequency 甚低频 very-low frequency band 甚低频频带 very low sound frequency 甚低音频率 ...
基于54个网页-相关网页
very low frequency band 甚低频波段
·2,447,543篇论文数据，部分数据来源于NoteExpress
The utilization rate of licensed spectrum is very low in the time domain, frequency domain and space domain, while the unlicensed band is overcrowded seriously.
大部分授权频段在时域、频域和空间域的利用率很低，而公共频段出现了严重的频谱拥挤。
youdao
应用推荐
模块上移
模块下移
不移动