英语词汇principal focus怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	principal focus
释义	principal focus 【物理学】主焦点[亦作 focal point]
随便看	double dippings double-dips double-disk harrow double displacement effect double-distilled double-distilleds double distribution double dome double-dome double-domed double doors double-doped transistor double-dot halftone doubledotted double-doublet antenna double dresser double dribble double dribbles double drift double drill double drummer double dummy double-dumped double Dutch double dutches

英汉双解词典包含483723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。