| 1. | Snow and ice are white, but debris or rough surface can change it into a grey tone .
雪和冰均呈白色，但是碎石或凸凹不平的地表可使其变成灰色色调。 |
| 2. | As the flow becomes concentrated in low places because of irregularities in the surface, rills are formed .
由于地面凸凹不平，当水流逐渐集中于低地时，就形成了溪流。 |
| 3. | Convex and concave milling cutters technical specifications
凸凹半圆铣刀技术条件 |
| 4. | Proving inequalities by the convexity or concavity of functions
用函数的凸凹性证明不等式 |
| 5. | Don ' t be surprised if what you feel is rough and bumpy
如果你觉得粗糙或凸凹不平，别觉得奇怪。 |
| 6. | Jointing products . mastics for bonding of connex or concave tiles . test methods
填缝用品.凸凹磁砖粘接胶合.试验方法 |
| 7. | Jointing products . mastics for bonding of convex or concave tiles . specifications
填接缝用品.凸凹磁砖粘接胶合.规范 |
| 8. | Research on a new kind of micro peristaltic robot in pipeline simulating a medicinal leech
一种可越过凸凹障碍的仿医蛭管内微型机器人 |
| 9. | A fingerprint is the pattern of ridges and valleys on the surface of a fingertip
所谓指纹就是在我们的手指表面上的凸凹不平的各种各样的纹路。 |
| 10. | Push the handle gently until the concavo convex parts of both clutches occlude automatically
用手轻推手柄待两个离合体的凸凹处重合后便会自行咬合 |
