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凹面形状
1、concavo-concave───adj.两面凹的
2、concave───adj.凹的，凹面的；n.凹面；v.使变凹形
3、concave upward───凹向上的；凹向上；[医]凹面向上
4、convexo-concave───adj.半凸半凹面的
5、concave shape───[医]凹形
6、concave polygon───n.[数]凹多边形；n.凹多边形
7、concave function───[数]凹函数
8、concave convex───凹凸
9、concave mirror───n.凹透镜; 凹镜
1、Serrated lock washers. External teeth. Concave form.───重迭外齿垫圈.凹形的
2、This crescent-shaped ridge of sand dune in Oman was formed by strong trade winds that form a smooth hill facing the wind (left) and concave slipface on the back.───阿曼一座新月形的沙丘脊由强信风吹成，在迎风的方向（图左侧）形成一面平缓的凸破，在背风面形成凹坡。
3、The first, concave concrete form of the entry facade welcomes all the users serving as a barrier protect the building and the terrace garden behind from excessive heat and sun light.───第一，是入口处内凹的混凝土形式，作为一个屏障保护建筑，避免背后的露台花园过热和太阳光。
4、N-pole fields are generated by 2N identical, symmetrically-arranged in azimuthal direction electrodes of circular concave form, whose potentials are Vo and -Vo alternately.───凹形圆弧偶端电极场是由偶数 (N)个对称地放置在方位角方向上、并具有一定电位的同样的凹形圆弧电极所产生的电场。