“beam efficiency”的概念、定义、翻译、参考文献-科学参考

单词	beam efficiency
释义	beam efficiency [`bēm i´fish·ǝn·sē] ^{ELECTROMAGNETISM} The fraction of the total radiated energy from an antenna contained in a single beam.
随便看	hematuria heme hemeralopia hemerythrin heme synthetase hem-, hema-, hemo-, haem- hemi- hemiacetal hemianesthesia hemianopsia Hemiascomycetes Hemiascomycetidae hemiazygous vein hemiballismus Hemibasidiomycetes hemicellulose hemicephaly Hemichordata Hemicidaridae Hemicidaroida hemic murmur hemicolectomy hemicone hemicryptophyte hemicrystalline

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。