This precious mineral is found as crystals within metamorphic rock.
我们可以在变质岩中发现这种珍贵矿物的结晶体。
The coal has lower metamorphic grade with high ash.
煤的变质程度低，灰分高。
Structure-stratigraphic method is an effective method for stratigraphic study in Precambrian metamorphic rock area.
构造地层学方法是变质岩，尤其是前寒武纪变质岩地区地层研究的有效方法。
At last, evolution of high pressure metamorphic belt is discussed.
最后讨论了本区高压变质带的成因演化。
The metamorphic core complex is an important rheologic pattern of continental extension.
变质核杂岩是大陆流变伸展的重要表现形式。
The metamorphic core complex is an important rheologic pattern of continental extension.
变质核杂岩是大陆流变伸展的重要表现形式。
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