英语词汇hierarchical key group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

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。

单词	hierarchical key group
释义	hierarchical key group
随便看	rotary disc valve with freeze seal rotary disk rotary disk biological contactor rotary disk bit rotary disk column rotary disk contactor rotary disk ditch cleaner rotary disk driller rotary disk extractor rotary disk feeder rotary disk filter rotary disk grizzly feeder rotary disk loader rotary disk meter rotary disk mower rotary disk press rotarydisk pulsed extractor rotary disk pulsed extractor rotary disk regenerator rotary disk shutter rotary disk valve rotary dispersion rotary displacement compressor rotarydisplacement compressor rotary displacement gas meter