The coal has lower metamorphic grade with high ash.
煤的变质程度低，灰分高。
A new thought is proposed to forecast mineralization of endogenetic deposits based on metamorphic grade of coal.
据此提出了根据煤变质程度进行内生矿床成矿预测的新思路。
Besides metamorphic grade, the nature of original rocks and the precursor of carbonaceous material may also influence graphitization.
除了变质程度以外，原岩的类型和碳的原始物质的种类也会影响碳的石墨化作用。
The Panxi (Panzhihua-Xichang) granulites have long been recognized as the oldest rock of the crystalline basement with the highest metamorphic grade on the western margin of the Yangtze Block.
攀枝花-西昌（攀西）麻粒岩一直被认为是扬子陆块西缘变质程度最高和最古老的结晶基底岩石。
The deformation was changing from plastic intensity to weakness and the metamorphic facies ranged from amphibolite to low-grade greenschist.
变形由强烈的塑性变形到弱变形，变质由角闪岩相到低绿片岩相及低于低绿片岩相。
The high grade metamorphic complexes in middle Hainan Island are composed of gneisses, migmatites, granulites and charnockites.
琼中地区存在由片麻岩、混合岩、麻粒岩和紫苏花岗岩组成的高级变质杂岩。
It is argued that further research on the very-low-grade metamorphism and metamorphic belts would be worthwhile.
强调指出进一步研究极低级变质作用和极低级变质带的必要性。
These retrograde micro-textures provide petrological evidence for rapid exhumation process and uplift of the high-grade metamorphic rocks such as eclogite in northern Dabie Mountains.
这些退变质结构为本区榴辉岩高级变质岩的快速折返过程和抬升历史提供了强有力的岩石学依据；
Mylonitized granite in the AilaoshanJinshajiang tectonic zone is hosted in the center of the Ailaoshan high grade metamorphic belt.
哀牢山—金沙江构造带糜棱状花岗岩位于哀牢山深变质带中部。
The high-grade metamorphic area is the Xiaotazhigou formation in the bottom of the distribution area of Archaean.
辽西高级变质区系指太古界底部小塔子沟组分布地区。
The Hengshan high-grade metamorphic terrain is one of the typical areas for the study of Early Precambrian metamorphic rocks in China.
恒山高级变质岩区是中国早前寒武纪变质岩研究的经典地区之一。
Having analysized the degree of crystallization of andalusite, it is believed that the anthracite is a low-grade thermal metamorphic rock.
从红柱石的结晶程度分析，这种无烟煤是一种低级热接触变质岩。
The deformation of the Changting low-grade metamorphic rock series occurs mainly as kink structures and open fold except as tight folds possible in local segments.
长汀浅变质岩系除局部地段可能存在紧闭褶皱外，以膝折带构造及宽缓褶皱变形为主。
The main mechanism of melt lineation is extensional deformation which led to partial melting of high-grade metamorphic rock.
伸展构造变形导致岩石部分熔融，是熔体线理形成的主要机制。
The recent geologic data show that it is the Archeozoic high-grade metamorphic terrain formed by the supracrustal rock-TTG rock series, that is different with the southern Longgang landmass.
新近调查资料表明 ，它是由表壳岩 -TTG岩系组成的一太古宙高级变质地体 ，并有别于南侧之龙岗陆块。
There outcrops a medium- to low-grade metamorphic series intercalated with metavolcanic rocks in the Huangzhuling area, eastern Hainan Island.
海南岛东部黄竹岭地区出露一套中浅变质岩系，其中夹变质火山岩。
There outcrops a medium- to low-grade metamorphic series intercalated with metavolcanic rocks in the Huangzhuling area, eastern Hainan Island.
海南岛东部黄竹岭地区出露一套中浅变质岩系，其中夹变质火山岩。
应用推荐