“lowest useful high frequency”的概念、定义、翻译、参考文献-科学参考

单词	lowest useful high frequency
释义	lowest useful high frequency [`lō·ǝst ¦yüs·fǝl `hī ´frē·kwǝn·sē] ^{COMMUNICATIONS} The lowest high frequency that is effective at a specified time for ionospheric propagation of radio waves between two specified points. Abbreviated LUHF.
随便看	Castaing-Slodzian mass analyzer castaneous cast coated paper caste castellanus castellated bit castellated nut castellatus caster cast-film extrusion Castigliano's principle Castigliano's theorem Castile soap casting casting alloy casting area casting copper casting jet casting ladle casting-out nines casting plaster castings casting shrinkage casting slip casting strain

科学参考收录了103327条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。