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。

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。

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.

文章简要报道了伊朗卡尚地区库姆组首次发现的沟鞭藻类，计6属6种。