英语词汇optional facility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	optional facility
释义	optional facility proportionalityn. 比例(性)；均衡(性)；相称 constitutionalityn. 合宪性 conventionalityn. 照惯例;习俗;因循性;恪守常规 operationalizevt. 使用于操作,使开始运转,实施
随便看	data transition tracking datatranslating system data translating system data translation data translation equipment data translation system data translation technology data translator compiler Data transmission. Data transmission datatransmission data transmission and control system data transmission and switching system data transmission bauds data transmission block data transmission by television data transmission by terminal device data transmission channel Data transmission circuit data transmission credibility data transmission device data transmission, digital data transmission data transmission echoing unit data transmission efficiency data transmission equipment

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。