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	crescendoes crescendoing crescendos crescent crescent beam crescentic crescentic dune crescent phase crescent sleeve crescent-type cross-bedding crescive cresol cresol red cresols cress cresset cressets Cressier cressies cressy crest crestal plane crest clearance crest cloud crest clouds

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。