1.
A Model for Representing and Reasoning of Spatial Relations between Simple Concave Regions
简单凹形区域间空间关系的一种表示及推理模型
2.
A concave surface, structure, or line.
凹面、凹形结构、或凹线
3.
New concave polygon convex decomposition algorithm for rapid prototyping subarea scanning
面向快速制造扫描分区的凹多边形凸分解算法
4.
The Formation of Lithologic Reservoirs in Negative Structural Zone in Dawangzhuang Area of Raoyang Depression
饶阳凹陷大王庄负向构造区岩性油藏的形成
5.
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
6.
To make in an inward curving form.
使成内凹形，使成穹形
7.
Formation Conditions and Exploration-favoring Areas of Subtle Reservoirs in West Taibei Sag
台北凹陷西部隐蔽油气藏形成条件及勘探有利区带(英文)
8.
ANALYSIS OF FORMING CONDITIONS OF NEOGENE RESERVOIRS AND PROSPECT IN QIKOU SAG AND ADJACENT AREAS
歧口凹陷及邻区上第三系油气藏形成条件和勘探前景分析
9.
Research on Technology Method for Solving Sunken Deformation in Circumference Welding of Barrel Part in Heating Area
解决筒体对接圆周焊缝热影响区凹陷变形的工艺方法研究
10.
Something having concave and convex edges terminating in points.
新月形物凹边和凹边汇合成点的物体
11.
Printing done with a plate bearing an image in intaglio.
凹版印刷用刻有凹版图形的模具印刷
12.
An indented or concave surface or area.
凹陷，洼地凹的表面或地区
13.
notch on a serrated edge
锯齿形边缘的凹口.
14.
meniscus (shaped) lens
凹凸透镜，弯月形透镜
15.
a concave shape with an open top.
顶上有开口的凹形物。
16.
reentrant cylindrical cavity
圆柱形凹腔, 半同轴空腔
17.
a concavity in a surface produced by pressing.
由于挤压而形成的凹陷。
18.
The cloven hooves are sharp edged, elastic and concave.
蹄锋利，呈凹形，富有弹性。