标签：frequency

girro 发布于 2024-03-12

New Science of Boron Allotropes, Compounds, and Nanomaterials by: Takahiro Kondo (Editor), Iwao Matsuda (Editor), Josep M Oliva-Enrich (Edit...

标签：aspects / Chemistry / collection / dissemination / frequency / High / information / IT

发布于 2020-01-03

Spectrum Management and Policy in the U.S.:Emerging Issues by: Flores, Wanda Publisher: Nova Science Publishers, Inc.(2015/3/13) Language: E...

标签：allocation / and / Commission / Communications / Federal / frequency / Government / policy / practice / Radio / Rules / States / Telecommunication / United