concave

UK:  [kɒn'keɪv]

US:  [kɑn'keɪv]

n.

1.凹,凹线,凹面(物)

2.凹面物

3.凹形地带

4.凹板块

5.凹处

6.脱粒凹板

7.凹度

8.叶片内弧

9.天穹

10.半圆形底壳

adj.

1.凹的,凹面的

2.凹形的

v.

1.把…弄成凹(面)

1 . The bottom of the body designed no concave nest. So have lower flowing resistance and prevent valves leakage or damage from trash pipe up.
阀体底部设计无凹槽，球阀因此具有流阻小，阀体防止污物堆积造成阀门渗漏或损坏等特点。

2 . typing, curling, concave design make brush head keep closer to eyes and make it easy to apply mascara onto tiny eyelashes on eye corner.
强效定型，卷翘，凹面刷头更加贴合眼部轮廓，更易于眼角细小睫毛的涂抹；

3 . At least one loop of absorption blind hole is evenly distributed around the segmental concave cavity along the radial direction of plane.
径向面上沿圆缺凹腔周围均匀分布不少于一圈的吸收盲孔；

4 . The time of purchase can be overturned bottom of the pot, pan with your fingers to withstand concave center, with a hard object percussion.
在购买时可以推翻底部的锅，锅用手指承受凹中心，用硬物敲击。

5 . It may be flat, concave, and convex or any one of a great variety of shapes to promote turbulence or help control combustion.
其表面可能为平面、凹面、凸面或任何一种形状，其能促进气缸内涡流运动或有助控制燃烧。