The conclusion is that the sedimentar y environment of coal measures in Changyang area, Shuangyang basin is mainly fan delta and limnetic deposits.是什么意思_The conclusion is that the sedimentar y environment of coal measures in Changyang area, Shuangyang basin is mainly fan delta and limnetic deposits.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句