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- The concave structure can hold your neck, and give it well protection.The other side of the double-side pillow can be filled with buckwheat shells, chaffs or vacuum cotton etc. 凹槽结构独有设计，增加颈部承托，保护颈椎，双面枕另一面可选择填充荞麦壳、金谷壳、真空棉。
- Just as a double convex lens enlarges, so a double concave lens reduces. 正象双凸透镜可以放大那样，双凹透镜也可以缩小。
- The method of mode search is taken to optimize a single-phase permanent magnet stepping motor with concavity structure. 利用模式搜索法对具体凹坑结构的单相微型永磁步进电动机进行了优化，并与传统方法设计的电机的性能进行了实验比较。
- Concave on one side and convex on the other. 一面凹进一面凸起的
- Convex on one side and concave on the other. 凸凹的一面凸一面凹的
- To the excellent concave and convex carving skill. 碑上的阴阳刻。
- Fault: Convex or concave muzzles. 缺陷：突起或凹入的口部。
- 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
- A concave surface, structure, or line. 凹面、凹形结构、或凹线
- His figure looks very funny in the concave mirror. 他的样子在凹镜里显得非常可笑。
- An indented or concave surface or area. 凹陷，洼地凹的表面或地区
- The two halves of the structure didn't marry up. 该结构的两部分未配合好。
- A convex surface, body, part, or line. 凸面、凸面体、凸面部分或凸线
- Nutlets veined, one side convex, other side concave. 小坚果脉，一边凸，其他的边凹。
- High winds put great stress on the structure. 大风作用于该建筑物上而产生巨大的应力。
- The structure had keeled over in the high winds. 那座建筑物让大风给刮倒了。
- A fan-shaped anatomical structure. 扇形器官扇形的解剖结构
- A secluded structure, such as a bower, in a garden. 凉亭一种在花园中建造的隐蔽性建筑物，如凉亭
- The microscopic structure of tissue. 组织机构组织的微观结构
- Just as a double convex lens enlarges,so a double concave lens reduces. 正象双凸透镜可以放大那样，双凹透镜也可以缩小。
