英语词汇ac:2009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	ac:2009
释义	Examples: discriminant (e.g. b^2-4ac in the formula for the root of a quadratic equation)— 判别式 inverter, device that converts AC electricity DC and vice versa— 反用换流器
随便看	updating facilities updating formula updating information updating instructions updating inventories updating knowledge updating licenses updating meeting updating of data updating of existing updating of Library updating of Manual updating of records updating of the database updating period updating process updating records updating references updating service updating software updating target; updating task updating the costs updating the database updating the framework,

英汉双解词典包含2273206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。

discriminant (e.g. b^2-4ac in the formula for the root of a quadratic equation)—