1·Carboniferous: of, belonging to, or denoting a geologic division of the Paleozoic Era following the Devonian and preceding the Permian.
石炭纪的,石炭系的:(属于或表示)地质上的一个分段,即紧跟着泥盆纪而早于二叠纪的古生代的。
2·The content and the distributing law of the microelements in lower Paleozoic era stone coal in South Qinling have been systematically studied.
对南秦岭早古生代石煤的微量元素含量、分布规律等进行了详细系统的研究。