1.
a concave lens [mirror]
凹透镜 [凹面镜]
2.
A concave surface, structure, or line.
凹面、凹形结构、或凹线
3.
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
4.
"Single curved moldings include the cavetto (concave, with a quarter-circle profile), scotia (deep concave), flute (grooved),"
单曲线脚包括凹弧饰(具有四分之一圆的轮廓的凹面)、凹形边饰(深凹面)、凹槽饰(开槽的)
5.
concave holographic grating monochromator
全息凹面光栅单色仪
6.
Having greater curvature on the convex side than on the concave side.Used of a lens.
凸凹的凸面比凹面曲度更大的。用来指透镜
7.
Having greater curvature on the concave side than on the convex side.Used of a lens.
凹凸的凹面曲率大于凸面曲率的。用于指透镜
8.
Concavity based in volume (concavity,v) and concavity based on surface (concavity,s), two new concepts to describe the concave degree of 3-D particles were put forward.
本文提出了体凹度和表凹度两个衡量三维粒子凹面程度的新参数；
9.
a plane with a flexible face that can plane concave or convex surfaces.
有可以刨凹面或凸面的曲面的刨子。
10.
a fixed reference point on the concave side of a conic section.
圆锥截面凹面的固定参考点。
11.
Convex on one side and concave on the other.
凸凹的一面凸一面凹的
12.
biconcave:Concave on both sides or surfaces.
两面凹的:两侧或两面凹陷的。
13.
Concave on one side and convex on the other.
一面凹进一面凸起的
14.
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
15.
A slight depression or indentation in a surface.
凹痕表面上轻微的下陷或凹陷
16.
An indented or concave surface or area.
凹陷，洼地凹的表面或地区
17.
tactile surface
有凹凸纹胶条的路面
18.
His eyes [cheeks] have sunk in.
他的眼睛[面颊] 凹下去了。