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麻山群和黑龙江群是佳木斯地块前寒武纪基底的重要组成。
The Mashan group and Heilongjiang group are major components of the base of Precambrian Jiamusi block.
youdao
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麻山群和黑龙江群是佳木斯地块前寒武纪基底的重要组成。
The Mashan group and Heilongjiang group are major components of the base of Precambrian Jiamusi block.
youdao