The naming of stars is at the discretion of the International Astronomical Union.给星体命名是由国际天文学联合会决定的。He developed an armillary sphere, on which were carved all the astronomical phenomena known time.经过多年的观察,他研制了一架“浑天仪”.凡是知...
Objective To study status of ametropia after penetrating keratoplasty.目的分析穿通性角膜移植术后患者的屈光状态.To Remedy ametropia and strabismus of children.目的:矫正屈光不正,矫治隐斜和斜视.I find you have a presbyopia and ametropia.根据检查,我发现您得的是老视眼,并有屈光不...