英语词汇back work ratio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	back work ratio
释义	back work ratio 简明释义回功比：指在某个过程中，输出功与输入功的比值。专业释义 1 航空、航天科学技术回功比双语例句 1 In this work, the questionnaire was used for collecting data. Totally 268 questionnaires were sent out while 142 valid ones were got back. The ratio of valid questionnaire is 53%. 本研究采用问卷调查方法进行了数据收集，共发出调查问卷268份，回收有效问卷142份，有效问卷率为53%。
随便看	basic way basic web events basic weight basic weld symbol basic well pattern basic wind pressure basic wind speed basic wing basic wire basic words basic work basic workers basic working days basic working display basic work of business management basic work of economic calculation basic worksheet basic workshop basic worm basic xenolith basic yarn basic year Basic Yellow basic yield basicy point price system

英汉双解词典包含3185865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。