“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	aircraft instrument panel aircraft low-approach system aircraft machine-gun turret aircraft noise aircraft propeller aircraft propulsion aircraft pylon aircraft report aircraft rocket aircraft testing aircraft thermometry aircraft vectoring aircraft weather reconnaissance air crossing air-cure air current air curtain air cushion air-cushion vehicle air-cut air cycle air cylinder air defense air-defense artillery air deficiency

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