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- inner common tangent 内公切线
- Similar Point : Given two circles, construction their outer and inner tangent lines.Then the outer similar point P is the intersection of outer common tangents of two circles. 相似点：给定两圆，作两圆之外公切线及内公切线，则两外公切线的交点P为"外相似点"；
- Given the algorithm for solving common tangent ball mechanism and network search algorithms. 给出了求解公切线的算法和网络搜索球机制的算法。
- 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。
- Monge Theorem : Given three circles, and construct common tangents of two circles mutually. Then three points lies in a straight line. 蒙日定理：给定三圆，则两两圆的外公切线交点在同一直线上(蒙日直线)。
- Knowledge without common sense counts for little. 光有学问而无常识，则这种学问无甚价值。
- I was allowed once into his inner sanctum. 我有一次获准进入他的内室。
- Her artificial gaiety disguised an inner sadness. 她以矫揉造作的快乐掩饰著内心的悲痛。
- Salt is a common food preservative. 盐是一种常用的食物防腐剂。
- The inner layer of the wall of a spore. 孢子内壁孢子壁的内层
- It's time to satisfy my inner man. 现在该是填饱肚子的时候了。
- She went into the inner room to change her dress. 她走进内室去换衣服。
- There is still no cure for the common cold. 目前仍没有治愈感冒的良药。
- Huxley, I feel, has much in common with Wells. 我觉得赫胥黎和威尔士有很多共同之处。
- Rabbits and foxes are common in Britain. 兔子和狐狸在英国很常见。
- The capital has an inner ring road. 那个城市有一条内环路。
- He has no inner resources and hates being alone. 他没有内在的精神寄托，因而害怕孤独。
- The inner room or parlor of a house with two rooms. 内室有两个房间的房子的内室或客厅
- 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
- Good books can enrich man's inner life. 好书可以丰富人的精神生活。
