题目内容
Factors affecting crystal size in the igneous rocks including:
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According to the depth from the surface of the Earth to the top point of the intrusive body, the intrusive rocks can be classified into:
According to their periodicity and activity, volcanoes can be classified into：
When the melted rock has reached the surface of the Earth, it is called:
According to the content of SiO2, the magma can be classified into:
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