英语词汇“petrogram”的中英文释义、用法、翻译及短语词组-英汉翻译词典

单词	petrogram
释义	petrogram 英?['petr?gr?m] 美?['petr?gr?m] 释义 n. （史前洞穴中绘于岩石上的）岩画
随便看	back ground effect background effect background effect source background election back ground electolyte back-ground electolyte background electrolyte effect background emission background equivalent activity background equivalent activity (BEA) background equivalent concentration backgrounder background eradication background erase background eraser backgrounders background exposure background extinction background factor background fade in background fade-in background fade out background film background filter time constant background fluctuation

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