The last glacial period is divided into two stadial stages with an interstadial stage.Evolution of lakes of the source area during the Quaternary went through three stages.
黄河源区的冰
可划分为3，即
冰、
二冰、三冰，冰又可分为2个冰阶。
The last glacial period is divided into two stadial stages with an interstadial stage.Evolution of lakes of the source area during the Quaternary went through three stages.
黄河源区的冰可划分为3，即冰、二冰、三冰，冰又可分为2个冰阶。
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