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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
- Some metals weld better than others. 有些金属容易焊,有的不容易焊。
- concave weld 凹焊缝,轻型焊,凹面焊,凹形焊缝
- 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。
- It takes speed and skill to weld steel at this heat. 在这样的温度焊钢需要速度和技术。
- It take speed and skill to weld steel at this heat. 在这样的温度焊钢需要速度和技术。
- 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。
- It takes speed to weld steel at this heat. 在这样的高温下熔接钢铁需要快速。
- A concave surface, structure, or line. 凹面、凹形结构、或凹线
- They weld the pieces of a broken axle. 他们焊接断了的车轴。
- His job is to weld parts together. 他的工作是焊接零件。
- 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
- Before applying heat for a weld, the plates should be clamped together. 在用热进行焊接之前,必须把金属板紧紧地夹在一起。
- To the excellent concave and convex carving skill. 碑上的阴阳刻。
- An indentedor concave surface or area. 凹陷,洼地凹的表面或地区。