短语词组短語chert clause [經]燧石條款diatomaceous chert 矽藻燧石oolicastic chert 空鮞狀燧石bone chert [巖]骨狀燧石;骨燧石chert bit 鑽矽質石灰巖用的鑽頭nodular chert 瘤狀燧石;燧石結核Structure Chert 結搆圖ocastic chert 鮞狀燧石 返回 chert