high output短语⁵¹⁰⁵⁰ 基本例句 高出力 A new high output and efficiency coal enterprise management model and short wall mining method were introduced. Its feature is less investment, fast become effective and rolls development. 介绍了一种投入少，见效快，滚动发展，高产高效的煤矿企业生产管理新模式及相应的短壁采煤法。 chemyq