underground gasification的用法和樣例：
例句
- Coal gas is produced by the gasification of coal.
煤氣是由煤的氣化作用得到的。 - Great progress on research for underground coal gasification technology has been also obtained in China.
我國對煤炭地下氣化技術的研究取得了很大進展。 - This paper discusses the principle of coal gasitication underground and experimental means.
對國內外煤地下氣化研究理論及實驗方法進行了概括性敘述。
