常見例句Deep buried dolostones in study areas mainly consist of fine or medium dolomites, which crystals are euhedral or subhedral. 認為研究區(qū)深埋藏白云巖主要由細晶或中晶白云石組成，白云石呈自形或半自形晶。Middle-Upper Cambrian dolomites in Shimen,Hunan Province,are mainly composed of anhedral micritic dolomite,euhedral and subhedral granular dolomites,grain dolomite. 湖南石門中上寒武統(tǒng)白云巖極其發(fā)育,類型多樣,不同類型的白云巖其成因機理和白云石化模式各不相同。subhedral minerals 巖狀礦物subhedral grain 半形的晶粒 返回 subhedral