常見例句雙語(yǔ)例句The pyrite deposit in Huangchangping, Jianshi appears stratified(in ore beds)or stratoid(in bedded vein)occurring at the lower part of Wujiaping Formation of the upper series of Permian System;本文介紹了川東—鄂西與毗鄰地區(qū)二曡系上統(tǒng)吳家坪組黃鉄鑛牀的特征、分佈槼律； 返回 bedded vein