pulverized coal fired boiler pulverized coal boiler
pulverized coal fired boiler
pulverized coal boiler
煤粒用英文怎么说
煤精用英文怎么说
煤系用英文怎么说
煤系地层用英文怎么说
煤系针状焦用英文怎么说
英语词典收录了最新的汉英词典和英汉词典,总共有200多万个词条,词库仍在不断更新中。