“elkerite”的概念、定义、翻译、参考文献-科学参考

单词	elkerite
释义	elkerite [`el·kǝ´rīt] ^MATERIALS A form of bitumen produced during a slow oxidation of petroleum.
随便看	backband back beach back bearing backbend backbending back-bent occlusion back bias backblast area back bond backbone back boxing backbreak back bulb backcast stripping back check back-coated mirror backcoating back contact back course backcross backcross parent backdeep backdigger back diode back-door cold front

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