查询词典 ethanediol

A C-C bond type radical initiator i.e. 1,1,2,2-tetraphenyl-1,2-ethanediol and a S-S bond type thermal iniferter, i.e., tetraethyl thiuram disulfide were used to consist of new reverse ATRP initiation systems TPED/FeCl3/PPh3 and TD/FeCl3/PPh3, respectively."Living"/controlled polymerizations of a polar monomer MMA and a non-polar monomer St were investigated with the initiation systems as well as other new initiation systems; behavior of vinyl polymerization with a new asymmetrical C-C bond type thermal monomeric iniferter was studied also.

前者选用C-C键型的自由基聚合引发剂1，1，2，2-四苯基-1，2-乙二醇、S-S键型的热iniferter二硫化四乙基秋兰姆组成新引发体系TPED/FeCl3/PPh3、TD/FeCl3/PPh3，研究这些引发体系引发MMA、 St聚合的&活性&/控制聚合行为，同时研究一些其他新引发体系；后者合成了一种新的非对称C-C键型热引发转移终止剂，并研究其自由基聚合规律。

Tetraphenyl-1,2-ethanediol and a S-S bond type thermal iniferter, i.e., tetraethyl thiuram disulfide were used to consist of new reverse ATRP initiation systems TPED/FeCl3/PPh3 and TD/FeCl3/PPh3, respectively.

这比文献(Sawamoto et al， 1998)报道的由2-氯-2，4，4-三甲基戊二酸二甲酯(dimethyl 2-chloro-2，4，4-trimethylglutarate)/RuCl2(PPh3)/Al引发体系引发MMA聚合的方法制备α-H，ω-Cl-PMMA要简便。

For the asymmetric reduction ofα-hydroxyacetophenone and ethyl 4-chloro acetoacetate,-1-phenyl-1,2-ethanediol and-ethyl 4-chloro-3-hydroxybutanoate were produced by the purified enzyme, with the 99% and 94.3% e.e. value respectively.

在纯酶水平验证了近平滑假丝酵母(Candida parapsilosis CCTCCM203011)对外消旋苯基乙二醇的拆分机理，整个去消旋过程是由-苯基乙二醇次级醇脱氢酶和羰基还原酶共同催化完成的。

The term is often used for the simplest of the class, ethylene glycol (1,2-ethanediol).

甘醇一词，通常表示这种化合物中最简单的乙二醇(亦称1，2－乙二醇)。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。