Predecessors have carried out a lot of studies about the stabilityofattention, but few of which involve undergraduate students, this research will aim to fill the gap.
前人开展的有关注意稳定性的研究集中在对中小学生注意稳定性特点的描述，很少涉及注意稳定性的影响因素。
2
The authors reviewed briefly the major researches in the hybrid impulsive systems in recent years. Attention is focused on the unified approach for stability analysis of hybrid impulsive systems.
概叙了混合脉冲系统稳定性的近几年的一些主要成果，并着重介绍了研究混合脉冲系统稳定性的一个统一方法。
3
Investigators have paid much attention to the primary stability and long-term success rate of dental implant.