东北防空区段 NEADS
北祁连东段 eastern segment of North Qilian
西昆仑东段北缘 east part of western kunlun
华北板块北缘东段 the part of northern margin of north china platform
东北段
Northeast section
以上为机器翻译结果，长、整句建议使用 人工翻译 。
中国东北地区小兴安岭北段分布的兴东群与佳木斯地区的麻山群一直被认为是早元古代形成的变质岩系。
The Xingdong Group distributed in the northern Xiao Hinggan Mountains and the Mashan Group in the Jiamusi area, Northeast China, are always considered to be Early Proterozoic metamorphic rocks.
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