preparationsn.准备,准备工作,配制剂(名词preparation的复数形式)
preparationn.准备;预备;配制
preparation concentrate精矿
preparation for weaving织造准备
preparation for a crime预备犯
Preparation of Whiskers晶须的制备
preparation temperature制备温度
preparation of antibody抗体制备
preparation of sections薄片的制备
preparation for classes上课的准备; 备课
preparation of catalyst催化剂制备
preparation of shipbody船体号料