The paper discusses the application of conversion speed regulated technique in shearer.It also introdues working principle and developing tendency of the shearea with AC electric traction.是什么意思_The paper discusses the application of conversion speed regulated technique in shearer.It also introdues working principle and developing tendency of the shearea with AC electric traction.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句