The reaction of malonic ester with aro-matics can also be carried out by above reagents.
丙二酸二乙酯和芳烃在三乙酸锰和磷酸作用下也能发生同样的反应。
Collective Risk model is very important in actuary, and it is easy to handle in math-matics.
短期聚合风险模型在精算学上占有非常重要的地位，而且在数学上处理起来也比较容易。
In kine-matics deformation surveying, the prior geometry information can be obtained from different methods, so it can be used to improve GPS ambiguity.
在动态变形监测中先验信息可以通过不同的方法获得，所以它可以用来改善GPS模糊度解算。
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