“L carrier system”的概念、定义、翻译、参考文献-科学参考

单词	L carrier system
释义	L carrier system [`el `kar·ē·ǝr ´sis·tǝm] ^{COMMUNICATIONS} Telephone carrier system used on coaxial cable systems, and microwave (line of sight), and tropospheric scatter radio systems; it occupies a frequency band from 68 kilohertz to over 8 megahertz.
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