短語詞組短語loader bucket lift arm 裝載機鏟斗升降臂bucket lift arm 鏟斗升降臂bucket t arm 鏟斗臂Bucket Arm Cylinder [機]斗桿油缸bucket arm pivot [機]斗桿鉸軸bucket arm length [機]斗桿長度Bucket arm 1 length 斗桿1長度Length of bucket arm 斗桿長度short bucket arm 短斗桿 返回 bucket arm