polyeth相关论文
Complete transection of peripheral mixed nerves immediately produces loss of sensory perception, muscle contractions and......
采用浸渍法制备了SO_4~(2-)/ZnO和SO_4~(2-)/TiO_2固体酸催化剂,用XRD、SEM等对催化剂的晶型结构和表面形貌进行了表征,并考察了它......

