“Permian coal measures”的概念、定义、翻译、参考文献-科学参考

单词	Permian coal measures
释义	Permian coal measures Encyclopedia 理学二叠纪煤系释 Permian coal measures二叠纪煤系在二叠纪时期连续沉积形成的一套含有煤层并具有成因联系的沉积岩系。又称含二叠纪煤岩系、二叠纪含煤建造、二叠纪含煤地层等。
随便看	variation of a metric variation of an additive function variation of argument variation of a sample variation of a set variation of a univalent function variation of a vector measure variation of behavior of invasive species variation of constants variation-of-constants formula variation of earth rotation variation of elements variation of fruit crops variation of functional variation of geomagnetic field variation of Hodge structure variation of latitude variation of life history traits of invasive species variation of Moon variation of parameters variation of physical constants variation of sign variation of the function variation of the moon variation orbit

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