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	sequence ladder Sequence,Leader mRNA sequence length sequence length distribution sequenceless sequence library Sequence,LINE Repeat sequence list sequence map sequence modulation sequence monitor Sequence motif Sequence,mRNA Leader Sequence,Nucleotide Sequence number sequence number error sequence number field sequence number handling sequence number indicator sequence number read out sequence number readout sequence number search sequence number, SN sequence of amino acid sequence of arcs

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