underground coal gasification
短语词组
- underground coal gasification station 煤炭地下气化站
- underground coal gasification ucg 煤炭地下气化
- underground coal gasification process 煤炭地下气化过程
- Underground coal gasification plant 地下煤气化厂
- underground gasification of coal 煤的地下气化
- coal underground gasification 煤炭地下气化
- underground E gasification of coal 煤炭地下气化
- coal gasification underground 煤地下气化
- coal bed underground gasification 煤田煤层地下气化 返回 underground coal gasification