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- On the basis of the way to evaluate circular degree error,the mathematic model for measuring the circular degree error are given with the least square,minimum circum circle and minimum area methods. 根据圆度误差的评定方法;建立了最小二乘法、最小外接圆法和最小区域法的数学模型;并给出了其圆度误差.
- She only unbends in the family circle. 她只在家庭环境里才不拘束。
- He asked for a donation but went away empty handed. 他请求人们捐款，但离开时却一无所获！
- An empty stomach is not a good political adviser. 空肚子不是政治上的好顾问。
- The baker empty several bags of flour into a bin. 面包师把几袋面粉倒入贮藏箱里。
- Don't always indulge in empty talk. 别总是纸上谈兵。
- His footsteps echoed (in the empty hall). 他的脚步声(在空荡荡的大堂里)产生了回声。
- The children formed a circle round her. 孩子们在她周围围成了一个圈。
- We've booked seats in the circle. 我们预订了楼厅包厢的座位。
- I had to empty out the drawer to find the papers. 我不得不倒出抽屉的东西以找出那些文件。
- He has a large circle of friends. 他有一大群朋友。
- These words are empty of meaning. 这些话毫无意义。
- She moves in a very small circle. 她的活动圈子很小。
- The old empty house soon went to rack and ruin. 这所旧的空房子很快就毁坏了。
- He has a wide circle of acquaintances. 他交游甚广。
- Don't build on his empty promises. 不要指靠他的空洞诺言。
- He has an empty purse, but a free heart. 他身上没有钱，但心里无忧无虑。
- A planar region bounded by a circle. 圆形区，圆形空间被圆所包围的一个平面区域
- Look, there are two empty seats over there. 瞧，那儿有两个空位置。
- A square has four sides but a circle has no sides. 正方形有四条边，而圆形没有边。
