圆环

In the course of FEM model building, tensile test experiment is taken to work out the real stress-strain curve. Ring compress test is also done in this paper, through which the friction coefficient is worked out and the friction mechanism and relevant friction model for tube stagger spinning is studied. The experiments ensured the veracity and reliability of the FEM modeling.

建模过程中，通过材料拉伸试验测定了旋压材料00Ni12Cr5Mo4TiAlV时效钢的真实应力应变曲线；利用圆环镦粗试验测定了材料在不同润滑状态下的摩擦系数，并对强力旋压的摩擦性质和摩擦模型的选择进行了研究，确保了建模关键参数的准确性和可靠性。

The rings are thought to symbolise the five continents: Europe, Asia, Africa, Australia and America.

这五个圆环象征着五大洲：欧洲、亚洲、非洲、奥洲和美洲。

Finally, we measured the performance of our algorithm using 50-200 torii with 800 triangles. The average collision detection time is around 1.3-14 milliseconds. In the experiments, our approach had shown to be efficient for collision detection in physics simulation and applied to real-time applications.

最后，我们利用50~200个由800个三角形构成的圆环测试执行效能，平均所花费的碰撞侦测时间约为0.85~9毫秒，实验结果，证实我们的方法能有效率地应用於物理模拟或即时系统之中

Dr Hong could not exactly duplicate that, but he came up with something similar: the idea of an extended toroid.

Hong教授虽然不能完全复制阿米巴变形虫，但他可以通过一种"拓展圆环"的方法来模仿阿米巴变形虫。

The toroid would simply turn itself inside out, accomplishing by different means the same thing the amoeba does.

圆环结构通过单纯的翻滚自身，异曲同工的复制阿米巴变形虫的移动方式。

This paper proposes an algorithm of torus reconstruction based on feature recognition and semantics of engineering annotations.

机械零件中的管道和曲面过渡通常都由圆环面构成。

This property is expressed as a fraction of the total space allocated for a doughnut.

该属性表示一个圆环图所分配的总空间的分数。

An unraised doughnut, usually twisted but also shaped into rings or oblongs.

炸圈饼面团一种未发涨的油炸面团圈，通常成纽绞条状，但也有圆环或长方形的

There are two components to the reconstruction process. First, the camera calibration and metric structure of each plane is computed, that is to calibrate a square pixel camera from three vanishing points of orthogonal directions and metric rectify each plane by computing the imaged circular points and the vanishing line.

首先 ，相机定标和计算每个平面的度量信息，即先基于 3组互相垂直方向的影灭点，对方形像素相机标定，再利用影灭线和圆环点像，对每个平面度量校正；然后考虑每个校正平面的尺度因子和非正交平面间的相对面向，从而将所有校正后的平面缝合起来。

In addition, since the ordinal measure based feature vector is insensitive to local or global slight changes among image content, so the noise-like distortion can be effectively conquered.

同时，引入顺序测度提取圆环序列的特征，因而可以很好抵抗类似噪声失真。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。