n.一种肺结核特效药...

hydrazide的音标：hydrazide的英式发音音标为：['haɪdrəzaɪd]hydrazide的美式发音音标为：['haɪdrəˌzaɪd]...

Preparation of salicylic hydrazide . Controlling material mole ratio and the product recrystallization is the key.水杨 酰肼的制备控制原料的摩尔比、产物的重结晶是关键.A new method for determining hydrazide group introduced to polymethyl acrylate ...