International norms are informal international institutions, there are self-enforcing by non-central authority in a diffusing way.
国际规范属于非正式制度的范畴，它是通过非中央权威的分散方式自我实施的。
2
The prognosis of central vision amblyopia was better that non-central vision type. Conclusion One-eye amblyopia could be treat and heal.
结果远视性屈光不正最多见，中心注视的弱视患者比非中心注视治愈效果好。
3
In this article, non-central collision, superball and Newton′s cradle are analyzed with the virtual experiment which is a useful way of collision′s analyzing and teaching.