2,2-bis(3-phenyl-4-hydroxyphenyl)propane(bisOPP-A) is a new type of monomer used mainly in the synthesis of high molecular polymers,such as polycarbonate,epoxy resin,polyester,etc,and it is also used for polymer modification.
2,2-双(3-苯基4-羟基苯基)丙烷(双OPP-A),是一种新型的高聚物单体,主要用于制备新型聚碳酸酯、环氧树脂、聚酯等高分子聚合物,或对高聚物共聚改性。
The obtained opp gene cluster spanned 6 741 bp which contains five ORFs encoding five putative proteins,OppA,OppB,OppC,OppD and OppF,respectively.
从迟缓爱德华氏菌(Edwardsiella tarda)LSE40 fosmid文库克隆到编码寡肽透过酶的opp基因簇。
The layer of the peak value of multimodes of ozone partial pressure is located in 21—30?km.
在21～30km高度之间是臭氧分压多峰值的极大值层,极大值平均为15。
In order to find the optimal preparation conditions, XRD,EDS,SEM,AFM and BiO-(Sr+Ca)O-CuO phase diagram were used in studying the effects of composition,substrate temperature and ozone partial pressure on the formation of Bi_2Sr_2CaCu_2O_(8+δ) (Bi-2212) thin films in the present work.
在BiO-(Sr+Ca)O-CuO相图上的Bi_2Sr_2CaCu_2O_(8+δ)(Bi-2212)相附近选择不同成分,用分子束外延法制备成薄膜,利用XRD,EDS,SEM和AFM研究了成分、衬底温度和臭氧分压对Bi-2212相薄膜成相的影响,分析了生长速率和错配度对Bi-2212相薄膜质量的影响。