您要查找的是不是：
- u0 concave operators u0凹算子
- u0 - concave operator u0-凹算子
- 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
- 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。
- T/ U0 c9 k9 ]9 u3 L! b) w% n$ q, y5 T. 要保证蔬菜质量，确保蔬菜新鲜、无污染。
- -α concave operators -α凹算子
- 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
- We have signed on a hundred machine operators. 我们已经招收了100名机器操作工。
- 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
- To the excellent concave and convex carving skill. 碑上的阴阳刻。
- He staffed ten computer operators in his firm. 他在公司里雇用了十名电脑操作员。
- An indentedor concave surface or area. 凹陷,洼地凹的表面或地区。
- Fault: Convex or concave muzzles. 缺陷：突起或凹入的口部。
- Concave on both surfaces;biconcave. 双面均凹进的；
