“coal resources of China”的概念、定义、翻译、参考文献-科学参考

单词	coal resources of China
释义	coal resources of China Encyclopedia 理学中国煤炭资源释 coal resources of China中国煤炭资源在中国境内，埋藏在地壳内可供开采利用的一种固体可燃有机岩（俗称煤或炭）。
随便看	graded education administration graded form graded free resolution graded group graded heterojunction graded homomorphism graded Hopf algebra graded ideal graded index graded index fiber graded index lens graded index lens, GRIN graded index media graded-index media =graded index 陡度折射率 graded junction graded lattice graded Lie algebra graded manifold graded medical treatment graded module graded morphism graded object graded pn junction graded-polarizable

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