Asymmetric organocatalysis has become one of the most active and attractive branch in asymmetric catalysis since the beginning of this century.
自本世纪初，不对称有机催化已经逐渐成为不对称催化领域中一个新的、最具活力的领域。
2
Fractal theory is the most activebranch of the non-linear science, what it concerns is non-smooth and non-differential geometry produced by complex systems.
分形理论是非线性系统理论中最为活跃的分支之一，研究的是复杂系统产生的不光滑、不可微分的复杂几何体。
3
Routing technology is one of the key technologies in the study of the wireless sensor networks, and the cluster-based routing protocols have become an activebranch of routing technology now.