“marker bed”的概念、定义、翻译、参考文献-科学参考

单词	marker bed
释义	marker bed [`märk·ǝr ´bed] ^GEOLOGY 1. A stratified unit with distinctive characteristics making it an easily recognized geologic horizon. 2. A rock layer which accounts for a characteristic portion of a seismic refraction time-distance curve. 3. See <<key bed>>
随便看	red potassium prussiate red precipitate red prussiate of potash red prussiate of soda red ring red rock red rot red rust redruthite Red Sea red sector redshift red snow Red Spot red stele redstone red stripe sucker sucker rod sucker-rod pump sucking louse Sucksmith ring balance sucrase sucrochemical sucrochemistry

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