标签：frequency

admin 发布于 2024-03-12

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

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 Get this book Contact Email: girro@qq.com Publisher: Nova Scie...

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