“bone chert”的概念、定义、翻译、参考文献-科学参考

单词	bone chert
释义	bone chert [`bōn ´chǝrt] ^PETROLOGY A weathered residual chert that appears chalky and porous with a white color but may be stained red or other colors.
随便看	system calendar system call system catalog system chart system check system command system design system designer system documentation system effectiveness system engineering system evaluation system flowchart system generation systemic circulation system improvement time system input system integration system-level timer system library system life cycle system loader system master tapes system of distinct representatives system operation

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