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- 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
- Every spring they shear off the sheep's wool and sell it. 每年春天他们都要剪下羊毛去卖。
- concave shear 凹形剪
- 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。
- A concave molding with a cross section that approximates a quarter circle. 飞檐的凹圆线脚截面近于九十度弧的凹线脚
- 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
- The palm of one's hand is slightly concave. 人的手掌是微凹的。
- A concave surface, structure, or line. 凹面、凹形结构、或凹线
- The process does not affect the shear stresses. 这样的处理并不影响剪应力。
- There will be no shear on this surface. 在该表面上没有剪切作用的存在。
- Concave on both surfaces;biconcave.Used of a lens. 双面均凹进的；双凹的。用于指透镜
- 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
- A fluid cannot withstand a shear. 流体不能承受切应力。
- To the excellent concave and convex carving skill. 碑上的阴阳刻。
- Shifting Winds: Being aware of wind shear. 风的移动:警惕风切变。
- An indentedor concave surface or area. 凹陷,洼地凹的表面或地区。
- Cell constructions for shear deformations. 剪切形变压力室的构造。
- Fault: Convex or concave muzzles. 缺陷：突起或凹入的口部。
