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- A polar radius interpolating principle is built on the basis of analysis made on circular involute forming principle. 在分析圆的渐开线形成原理的基础上，建立了极径渐开线插补原理。
- The two systems of government are polar opposites. 这两种政体正好相反。
- We can compute the circular area with radius. 我们能用半径计算出圆的面积。
- Errors analysis of the polar radius and polar angle of non- circular gear cut by NC cutting machine 数控插齿加工的非圆齿轮极径与极角误差分析
- Scattered Sampling Points Design for Diameter Measurement of Spherical Workpiece with Polar Radius Method 基于极径法球径测量的测量点布局设计
- Most insect do not live in polar region. 大多数的昆虫不在极地地区生存。
- Moving or directed along a radius. 沿着或向着半径移动的
- Are there any animals in the polar circles? 南极圈和北极圈内有动物存在吗？
- The police searched all the woods within a six-mile radius. 警察搜索了在周围六英里以内的树林各处。
- Located or found in one of the Polar Regions. 环极的，围绕极地的位于或发现于一个极地区域中的
- There are three lakes within a radius of five miles. 周围五英里之内有三个湖泊。
- The given radius being 4 ft., find the circumference. 已知半径为四英尺,求周长。
- In spite of vigilance a polar bear escape from the zoo. 尽管警戒很严，北极熊还是逃出了动物园。
- Every family within a radius of25 miles of the city center. 住在离城中心半径25英里的范围内的家庭
- The polar region is the habitat of the polar bear. 北极地带为北极熊的栖息地。
- polarization radius 极化半径
- Although they can swim, the polar bears are terrestrial animals. 北极熊虽然会游泳，但也是陆栖动物。
- In spite of vigilance a polar bear escaped from the zoo. 尽管警戒很严，北极熊还是逃出了动物园。
- What is the radius of this circle? 这个圆的半径有多长?
- The polar bear's habitat is the icy waters of the Arctic. 北极熊的栖息地是冰冷的北极海域。
