查询词典 carbonate-apatite

The said process can obtain diethyl carbonate product with purity as high as 99.5%.

采用本发明分离提纯碳酸二乙酯的方法，可以得到碳酸二乙酯含量为99.5％的产品。

When diethyl carbonate was used as transesterification reagent,the convertion of phenol and the yield of DPC had improved,but the extant was small.

以碳酸二乙酯为酯交换试剂，苯酚的转化率和DPC的产率都有所提高，但提高的幅度不大。

When all the sodium has dissolved, a mixture of 164 parts of ethyl phenylacetateand 118 parts of diethyl carbonate is added during 5 minutes and the mixture is maintained at the boil for a further hour.

当所有的纳都溶解后，然后在五分钟内添加164份乙基乙酸苯酯和118份二乙基碳酸酯的混合物，混合物再另外维持一个小时的沸腾状态。

This invention provides a polymerizer and polymerization equipment for producing an aromatic polycarbonate by melt transesterification from a molten prepolymer, of the aromatic polycarbonate, produced from an aromatic dihydroxy compound and a diaryl carbonate.

本发明提供了一种用于通过熔融酯交换由芳族聚碳酸酯的熔融预聚物生产芳族聚碳酸酯的聚合器和聚合设备，其中芳族聚碳酸酯的熔融预聚物由芳族二羟基化合物和碳酸二芳基酯生产。

Ytterbium metal, ytterbium diiodide, samarium diiodide promoted organic reaction and their applications in organic synthesis;;bis carbonate in organic synthesis

中文题名金属镱，二碘化镱和二碘化钐促进的有机反应在有机合成中的应用；双碳酸酯在有机合成中的应用

However, the turnover frequency for dimethyl carbonate decreases with the increase in the Cu content of catalyst.

催化剂的反应活性与催化剂的焙烧温度密切相关，最佳的催化剂焙烧温度在200～300℃之间。

Much attention has been paid to the synthesis and application of dimethyl carbonate because o...

作为一种低毒性和有多种反应活性的化学试剂，碳酸二甲酯(DimethylCarbonate简称DMC)的合成与应用近年来受到了广泛的重视。

"Aragonite: an orthorhombic mineral form of crystalline calcium carbonate, dimorphous with calcite."

霰石： 文石结晶富钙碳化物的一种正交晶矿物，具有方解石的两种晶态。

Form'.'' of crystalline calcium carbonate, dimorphous with calcite.

正'。''交晶矿物，具有方解石的两种晶''。'态'。

The method of titrimetric analysis of dissoluble carbonate in water glass has been established.

建立了水玻璃中可溶性碳酸盐的滴定分析法。

Putt your way through 36 fun-filled holes of minigolf on 3D designed courses with elevated greens, bunkers, bridges and water hazards, among other crazy obstacles.

您的推杆方式，通过36个有趣的填孔迷你的三维设计的课程，以提升绿党，掩体，桥梁和水的危害，除其他疯狂的障碍。

Some participles can be used either as attributes or as predicatives.

有些分词既可当定语用，也可当表语用。