preparation act预备行为preparationn.准备；预备；配制Preparation of Potato Carboxymethyl Starch马铃薯羧甲基淀粉制备工艺的研究Preparation of flavored fermented beverage调味乳酸菌饮料的研制Preparation of Nanoparticle Realgar Powders纳米级雄黄粉体的制备Preparation for Property- value reduction资产减值准备Preparation of Bentonite Powdered Detergent膨润土粉状洗涤剂研制Preparation of New-style Hair ConditionerPreparation of microencapsulated linseed oil粉末亚麻油的制备研究Preparation of New Ecotype Foamed-Concrete新型生态型发泡混凝土的研制Preparation of mordenite composite membranes丝光沸石复合膜的制备及其影响因素Preparation of Orthogonally Protected Lysine正交保护赖氨酸的制备