短语词组短语back waist length 腰长Back base length band 下脚脾位长back strap length 后肩长BACK VENT LENGTH 后开叉长back side length 后摆缝长Flange Back Focal Length 机械后焦Back pocket length 后袋深Back dart length 后褶长back yoke length 后担干长 返回 back length