英语词汇upgrade system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	upgrade system
释义	upgrade system unsystematizedadj. 不是系统化的
随便看	propane extraction process propane fractionating propane fractionation propane fractionator Propane gas propane gas burner propane gas cutting propane heated drier unit propane hydrate propane ionization chamber propaneoic acid propane oil ratio propaneoil ratio propaneol propaneone propane propylene fraction propanepropylene fraction propane reflux propane refrigeration unit propaneselanol propane soldering iron propane steam cracking propane storage tank propanesulfonic acid Propane sultone

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。