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 for Frug Addicts戒毒制剂
preparation of reference map基准图制备
preparation of Olympic Games奥运备战
Preparation of lactobacillus乳酸菌制剂
preparation for competitions备战
Preparation of Woven fabrics面料的准备
preparation for appraisement迎评准备
Preparation for the Judgment公判准备