久久国产欧美日韩精品,日韩国产精品久久久久久亚洲,99视频精品全部免费免费,91精品国产综合久久走光

本文介紹了釧路煤層及相關(guān)割理系統(tǒng)的特性,通過(guò)試驗(yàn)研究了圍壓變化和煤層割理對(duì)氣體滲透性的影響.The influence of confining pressure change and coal cleat on gas permeability is studied by experiments....

“割理”的英語(yǔ)可以翻譯為：hugger，cleap，cleat，[地質(zhì)] cleet ...

“割理”的拼音為：gē lǐ...