Qum Formatiom with carbonate is mainly exploration aim stratum, the C4 member of Qum Formatiom is mainly production layer.
库姆组碳酸盐岩为主要勘探目的层，其中库姆组c 4段为主要产层。
2
A quadratic unsharp masking (QUM) operator is presented, which extracts edge and detail information from an image with equal weights.
提出了一种二次反锐化掩模算子(QUM)，用于从图像中提取等比重的边缘和细节信息。
3
The firstly discovered dinoflagellates (including 6 species in 6 genera) from the Qum Formation of the Kashan block in Iran are reported briefly in this paper.