短語詞組短語channel l steel 槽鋼ventilation channel sheet steel 通風(fēng)槽鋼片Channel -Section Steel 槽形鋼Deformed Channel Steel 異型槽鋼channel steel expansion 槽鋼脹圈galvanized channel steel 鍍鋅槽鋼based channel steel 基礎(chǔ)槽鋼equilateral channel steel 等邊槽鋼 返回 channel steel