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 of alumina氧化铝制取
Preparation handicraft制备工艺
preparation conditions制备条件
Preparation procedures制备工艺
preparation of waybill填写路程单
preparations procedure制备工艺
preparation of pulpwood木浆调制
preparation formulation剂型
preparation for assault冲击准备
preparation of document编制文件