英语词汇operational service period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	operational service period
释义	operational service period
随便看	humic andosol humic andosols humicap humic cambisol humic cambisols humic carbonated soil humic coal humiccolin humic compound humic compounds humic degradation matter humiceram humic ferralsol humic ferralsols humic fertilizer humic glei soil humic gley soil humic gleysol humic gleysols humic horizon humic ironpan humic kerogen humic latosol humic material Humic matter

英汉双解词典包含3607232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。