短語詞組短語cementation belt joint 膠接皮帶接頭glued belt joint 膠接皮帶接頭conveying belt joint 輸送帶接頭cemented belt joint 皮帶膠接glue belt joint 皮帶膠接Qinzhou -Hangzhou joint belt 欽graded joint ply belt 階梯式運(yùn)輸帶joint of belt 皮帶接頭 返回 belt joint