concave

adj.

1. 凹的；凹面的
   curving in
   1. a concave lens/mirror
      凹透镜；凹镜

1. ADJ-GRADED 凹的;凹面的
   A surface that is concave curves inwards in the middle.
   1. ...a concave stomach.
      凹陷的腹部
   2. ...the concave bottom of an empty hair spray container.
      空喷发胶罐凹进去的罐底

1. The palm of one's hand is slightly concave.
   人的手掌是微凹的。
2. A concave mirror creates an image from this light using a design pioneered in the17th century, by Sir Isaac newton.
   早在17世纪，艾萨克.牛顿就开创性的利用这个光，让凹透镜产生了一个图像。
3. His figure looks very funny in the concave mirror.
   他的样子在凹镜里显得非常可笑。
4. Because there is no abrasion between the concave and convex, the nut is reusable.
   因为凹面与凸面没有磨损，螺母可以重复使用。
5. The cloven hooves are sharp edged, elastic and concave.
   蹄锋利，呈凹形，富有弹性。
6. At the core of Wright's system was a standardized4x12x24-inch concrete or glass block with concave edges.
   Wright系统的核是一个标准化的4x12x24英寸的带凹面的混凝土或玻璃砖块。
7. Alternative characterization of concave and convex functions which is sometimes useful.
   对于凹函数和凸函数还有一个替补的表征，有时它是有用的。
8. In adults its contour may be straight, slightly concave or slightly convex.
   成人肺其形状可以是直的，轻微凹下或轻度突出。
9. A design method with globe optimization and reverse optimization was presented to achieve a flat-field holographic concave grating used for micro-spectrometer system.
   研究了应用于微型光谱仪的平场全息凹面光栅的设计方法，提出了全局优化和反向优化的设计思想。
10. The lenses become more convex or concave, depending on whether the wearer is long-sighted or short-sighted.
    镜片可以根据佩带者的近视或远视情况变得更凸出或凹陷。
11. Mystic quartz cut into Concave cut is very beautiful.
    神秘石英切割成凹切的是，漂亮极了。
12. Ensure that the snap ring and concave washer are seated correctly.
    确保卡环和凹面垫圈正确就位。
13. Concave on one side and convex on the other with the concavity being greater than the convexity.
    一边凹一边凸，而且凹度比凸度大。
14. And also there are two kinds of the trailing edge, concave and oblate spheroid.
    气泡的尾部形状也分为两种：凹形和扁球形。
15. Some known results on monotonicity of the arithmetic means of convex and concave functions are improved.
    改进了有关凹函数和凸函数的算术平均值单调性的某些已知结论。
16. Once the concave support is positioned and aligned, the centre lines and must be parallel.
    安放好凹面支架并对齐后，中间管路和必须平行。
17. Finally, each optimized design parameter of the concave die structure had achieved, and obtained the anticipated result.
    最后达到了凹模结构的各个参数的优化设计，得到了预期的结果。
18. After achieving the desired shape, I cast my model in plaster to create a concave mould.
    在获得我想要的形状之后，我把我的模型上了石膏，从而创造一个凹面的模具。
19. A concave shape in a surface or edge or coastline etc..
    在表面或边缘或在海岸线上的凹陷形状。
20. A plane with a flexible face that can plane concave or convex surfaces.
    有可以刨凹面或凸面的曲面的刨子。
21. The relation between the focal length of a concave lens and its reflective image properties is analysed and deduced.
    本文分析推导了透镜的凹面反射成像与凹透镜焦距的关系，介绍了利用此关系较方便地测量凹透镜焦距的方法。
22. The graph of a concave function is always below its tangent.
    一个凹函数的图象总在它的切线的下方。
23. It is useful in many branches of mathematics analysis through the research of concave and convex functions.
    对函数凹凸性的研究，在数学分析的多个分支都有用处。
24. A polyhedron some of whose plane sections are concave polygons.
    有些平面部分是凹型多边形的多面体。
25. In order to facilitate the preparation of the main processing parts concave shape, the punch process.
    为了便于加工编制了主要成型零件凹、凸模的加工工艺。
26. The experiment research on stability of ring-stiffened concave cone-toroid-cylinder combined shell is presented in this paper.
    文章对凹型加肋锥-环-柱结合壳稳定性进行了模型试验研究，观察到凹环壳段失稳的一个特殊现象。
27. ( classical architecture) a molding for a cornice; in profile it is partly concave and partly convex.
    （古典建筑）为一个檐板塑造；外形部分凹部分凸。
28. A fixed reference point on the concave side of a conic section.
    圆锥截面凹面的固定参考点。
29. A concave shape micromachined variable capacitor was presented which has high Q and wide tuning ranges.
    提出了一种高Q值、宽调节范围的凹型结构微机械可变电容。
30. Position as for a curved seam manipulation the outer ( convex) shape onto the concave.
    弧形缝操作法，凸形的放在凹形的上面。

adj

1. curving inward