常见例句pyridine dicarboxylic acid was prepared by using 2,6 dim ethylpyridine as material and potassium permanganate as oxy genant. 以2，6-二甲基吡啶爲原料，通過高錳酸鉀氧化郃成了吡啶-2，6二甲酸。 返回 Genant