concaveadj.凹的n.凹面;凹线;凹形
concave downadj.下凹的
concave game凹对策
concave flow凹岸水流
concave leaf凹状叶
Concave body凹体
concave roll凹面轧辊,凹面辊,带槽轧辊,孔型轧辊
concave plug凹面塞
concave grid凹格板,凹板筛
concave roof凹面屋顶
concave disc凹面圆盘,球面圆盘