“sandy chert”的概念、定义、翻译、参考文献-科学参考

单词	sandy chert
释义	sandy chert [`san·dē `chǝrt] ^PETROLOGY Chert formed in sandy beds by replacement of cement, or the filling of pore spaces, with silica.
随便看	step cut step-down transformer step fault step function step-function generator step gage Stephanian Stephanidae stephanite Stephan's Quintet step lake step-out time step-out well steppe steppe climate stepped cone pulley stepped footing stepped gear wheel stepped leader stepped screw stepped-wave static inverter stepper motor stepping stepping motor stepping reflex

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