1.
A concave surface, structure, or line.
凹面、凹形结构、或凹线
2.
a concave lens [mirror]
凹透镜 [凹面镜]
3.
notch-tow barge
凹尾驳(尾部有顶推凹口
4.
Convex on one side and concave on the other.
凸凹的一面凸一面凹的
5.
An indentation or small hollow.
凹处凹陷处或小洞小坑
6.
A depression similar to that in a shallow concave container for food.
凹形，凹面与浅的凹型盛食物的容器相似的凹处
7.
The degree of concavity in such a depression.
凹陷，凹度这种凹陷的程度
8.
A recess, as in a border or coastline.
凹入处凹进之处，例如边缘或海岸的凹进处
9.
A small cavity in the earth, especially one containing ore.
凹地地球的小凹穴，尤其含有矿石的凹穴
10.
colts tail
【气】凹凸云，卷云
11.
concave on one side and convex on the other with the concavity being greater than the convexity.
一边凹一边凸，而且凹度比凸度大。
12.
A plate used in the process of gravure.
凹版印刷板凹版印刷过程中使用的板
13.
0 - Flat;1 - Raised;2 - Inset;3 - Raised Light;4 - Inset Light
-平面；1-凸起；2-凹入；3-凸起光；4-凹入光
14.
convex on one side and concave on the other with the convexity being greater than the concavity.
一边凸一边凹，而且凸度比凹度大。
15.
A reproduction produced by gravure.
凹版印刷品凹版印刷生产的复制品
16.
A slight depression or indentation in a surface.
凹痕表面上轻微的下陷或凹陷
17.
An indented or concave surface or area.
凹陷，洼地凹的表面或地区
18.
A small cavity or depression, as in a bone.
窝，凹骨头中的小窝或凹陷