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- externally tangent circle 外切圆
- Internal and External Common Tangent Circles of Three Circles Which Are Externally Tangent Each Other 三个两两相外切圆的内公切圆与外公切圆
- 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。
- This medicine is to be applied externally. 这药是用於外敷的。
- He has a wide circle of acquaintances. 他交游甚广。
- externally tangent 外切的
- 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
- 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。
- 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。
- He has only a narrow circle of friends. 他交游不广。
- 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。
