| 1. | The palm of one 's hand is slightly concave ..
人的手掌是微凹的。 |
| 2. | The cloven hooves are sharp edged, elastic and concave .
蹄锋利，呈凹形，富有弹性。 |
| 3. | 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。 |
| 4. | The mirror is concave .
镜子呈凹面。 |
| 5. | The next wave would lift those objects up its steep concave slope .
跟着涌来的浪头又把这些物品举到了那高高的浪峰上。 |
| 6. | The next wave would lift those objects up to its steep concave slope .
跟着涌来的浪头又把这些物品举到了那高高的浪峰上。 |
| 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. | the spectrograph uses a concave diffraction grating that provides a wavelength dispersion of 4. 2a°/mm in the first order.
光谱仪用了一块凹面衍射光栅，第一级光谱的色散度为42埃毫米。 |
| 9. | Semi - circular profile milling cutters , concave ; dimensions
半圆成形凹铣刀.尺寸 |
