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- We put forward in this article the method of applying common tangent circle drawing to draw ellipses. 提出应用公切圆法画椭圆，可不必推平行线和多次加长圆规，只需用直线尺作图，且理论上误差为零。
- For ?0 we naturally get a circle; for ?0 we obtain two tangent circles. 对?0我们当然得到一个圆；对?0得到两个相切的圆。
- It indicates that reversed tangential air admission can reduce the diameter of actual tangent circle distinctly, and eliminate the redidual rotation obviously on the cold test. 通过实体锅炉冷态等温试验,表明上二次反切风能较明显地减小实际切圆直径,对消除炉膛出口残余旋转效果显著。
- She only unbends in the family circle. 她只在家庭环境里才不拘束。
- 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。
- He has a large circle of friends. 他有一大群朋友。
- She moves in a very small circle. 她的活动圈子很小。
- He has a wide circle of acquaintances. 他交游甚广。
- 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
- They changed their course to something like a tangent to the earth. 他们将航线改变为差不多与地球呈正切的方向。
- A square has four sides but a circle has no sides. 正方形有四条边，而圆形没有边。
- Sorry, exercise circle is sold out. 对不起，健身圈卖完了。
- He has only a narrow circle of friends. 他交游不广。
- It's not easy to follow her think because she's always go off at a tangent. 要跟上她的思路并非易事，因为她老是突然扯到题外去。
- The axis of a circle is its diameter. 圆的轴线是其直径。
- This is a device for squaring the circle. 这是一个不可能实现的方案。
- The students sit in a circle on the floor. 学生们在地板上坐成一圈。
- A circle without a center is inconceivable. 一个没有圆心的圆是无法想像的。
- The children linked hands to make a circle. 孩子们挽起手来围成一个圈。
