“guide fossil”的概念、定义、翻译、参考文献-科学参考

单词	guide fossil
释义	guide fossil [`gīd ´fäs·ǝl] ^PETROLOGY A fossil used for rock correlation and age determination.
随便看	singing sand singing-stovepipe effect single acting single action single-action press single-address instruction single-axis gyroscope single-base powder single-bevel groove weld single-blind technique single-block brake single-board computer single bus single-button carbon microphone single-carrier theory single-channel multiplier single-channel simplex single-chip computer single-column punch single completion single-compound explosive single crystal single-current transmission single cusp of the first kind single cusp of the second kind

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