A Physical Property Analysis on the Upper Permian Coal Rocks and the Coal-bed Gas Reservoir, Eastern Yunnan and Western Guizhou是什么意思_A Physical Property Analysis on the Upper Permian Coal Rocks and the Coal-bed Gas Reservoir, Eastern Yunnan and Western Guizhou在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句