extra material短语¹¹⁴⁴⁶⁷⁺⁴ 基本例句 特加纱线 This variation features a bi-swing back, a feature where extra material is gathered to allow more freedom of movement in the shoulder area. 背部两侧采用了伸展式设计,这种设计赋予肩部更自由的活动范围。 jmlife Once isolated, the extra material defect boundary can be examined by using morphology operators. 对分离后的缺陷用形态学算子提取边界。 cnki