underground coal gasification

• 煤地下气化

underground coal gasification的用法和样例：

例句

1. This paper discusses the principle of coal gasitication underground and experimental means.
   对国内外煤地下气化研究理论及实验方法进行了概括性叙述。
2. Great progress on research for underground coal gasification technology has been also obtained in China.
   我国对煤炭地下气化技术的研究取得了很大进展。