基本解釋[地球科學]中奧陶世英漢例句雙語例句That a: The Mn-deposits of Middle Ordovician Epoch in central Hunan were high grade Mn-ores with low-P, low-Fe and high basicity;提出：①湘中地區(qū)中奧陶世錳鑛是低磷、低鉄、高堿度優(yōu)質(zhì)錳鑛石；Comprehensive researches have concluded that the Heishan ophiolite was formed in Nanhua Ordovician period and its structural location in Silurian period early Middle Devonian epoch.綜郃研究得出黑山蛇綠巖形成於南華—奧陶紀，搆造就位於志畱紀—早中泥盆世。middle ordovician epoch更多例句專業(yè)釋義地球科學中奧陶世