1) A dark spot or discoloration in a mineral.
矿物中暗斑或变色
2) macle
[英]['mækl] [美]['mækḷ]
矿物中暗斑
3) darkcoloured mineral
暗色矿物
4) dark-colored femic minerals
铁镁暗色矿物
1.
Secondary porosity formation of Upper Paleozoic low porosity-permeability coal-formed gas reservoirs,Ordos Basin:Simulation on dissolution of anorthite and dark-colored femic minerals in acetic acid solution
鄂尔多斯盆地上古生界煤成气低孔渗储集层次生孔隙形成机理——乙酸溶液对钙长石、铁镁暗色矿物溶蚀的模拟实验
5) To become dark or darker.
变暗或更暗
6) central dark spot
中心暗斑
1.
The effect of the size of the central dark spot in Newton s ring pattern on measuring results has been analyzed,and a solution is given.
本文分析了牛顿环中心暗斑大小对测量结果的影响,并给出了解决方法。
