LI Dongmei,SU Guoxiu,CHEN Ming,et al.Designment of three working position switch operating machlne[J].Coal Mine Machinery,2005(11):33-34.是什么意思_LI Dongmei,SU Guoxiu,CHEN Ming,et al.Designment of three working position switch operating machlne[J].Coal Mine Machinery,2005(11):33-34.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句