测绘科学技术
最高无线电频率
This frequency is close to the lower band of the highest radio frequency band known as extremely high frequency which goes from 30 to 300 GHZ.
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英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。