研究结果表明，和林格尔古代人群在母系遗传上与现在北亚人群的亲缘关系最近。
The results show that the ancient population is closer to the populations from Northern Asian than the other compared populations in matrilineal lineage.
方法：采用分组，随机的调查方法，对和林格尔县的眼病和主要致盲原因进行调查。
Methods: a random and grouped method was used to investigate the main cause of eye disease and blindness in Helinger County.
内蒙古和林格尔农牧交错区是内蒙古农牧交错带的一部分，具有典型的农牧交错区景观特征。
The Helinger agropastoral region with the typical agropastoral landscape characteristics is a part of the whole Inner Mongolia agropastoral zone.
前言：目的：视觉2 020行动是于1999年发起的，目前与之相关的许多项目在进行中，为了配合这一行动，乃调查和林格尔县主要眼病和致盲原因。
Objective: Vision 2020 is launched in 1999, currently a lot of program is undergoing accompany with this program, so as to investigate the main cause of eye disease and blindness in Helinger County.
前言：目的：视觉2 020行动是于1999年发起的，目前与之相关的许多项目在进行中，为了配合这一行动，乃调查和林格尔县主要眼病和致盲原因。
Objective: Vision 2020 is launched in 1999, currently a lot of program is undergoing accompany with this program, so as to investigate the main cause of eye disease and blindness in Helinger County.
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