局部减薄 meaning in English

local reduction
partial reduction

So for some special patients , zona drilling or local zona thinning with increased z ptv may help embryo hatching . at the same time , different types of assisted hatching have been developed , such as mechanical tearing , chemical digesting and laser burning
因此，对一些特殊病人进行透明带打孔或局部减薄提高zptv或许有助于胚胎孵出及种植；与此同时，多种辅助孵出方法也在被人们尝试使用，如机械切割法、酸化学溶解法和新近使用的激光烧灼法。