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- Base circle of an involute 渐开线的基圆
- Base circle of involute helicoid worm 渐开线蜗杆基圆
- In this paper,the formula of calculation of the axial profile of an involute helical gear(or an involute helicoid worm)is inferred. 渐开线圆柱斜齿轮，当齿数很少而螺旋角很大时，可以看作渐开线圆柱蜗杆。
- The axial profile of an odometer driving gear(in form it's equal to an involute helicoid worm) in a certain model motorcycle is carefully analysed. 仔细分析了某型摩托车里程表主动齿轮(形式上相当于一个渐开线圆柱蜗杆)的轴向齿形。
- Once she drew a sketch of our teacher Dr. B. B's head in the shape of an egg with a half circle of hair, which made us burst out laughing. 有一次她给我们的老师B.;B
- He has a large circle of friends. 他有一大群朋友。
- Because of growing product in some Chinese iron and steel companies, load capacity of an involute gear decelerator connecting with a rolling mill is very short at present. 针对轧钢企业轧制产量逐年上升，与轧机相接的渐开线齿形齿轮减速器承载能力严重不足的现状，提出将减速器的渐开线齿形变为抗点蚀能力较强的双圆弧齿形。
- He has a wide circle of acquaintances. 他交游甚广。
- Once she drew a sketch of our teacher Dr. B. B's head in the shape of an egg with a half circle of hair,which made us burst out laughing. 有一次她给我们的老师B.;B
- He has only a narrow circle of friends. 他交游不广。
- There is a circle of flowers around the statue. 塑像周围鲜花环绕。
- I have a circle of friends here. 在这里我有一群朋友。
- He looked around the circle of eager faces. 他看了看四周热切的脸庞。
- My inn had once been a part of an ancient ecclesiastical house. 我的客栈曾经是一个古老教会的房子的一部分。
- In accordance with the characters of end section involute of helicoids,it is analyzed of change of the base circle affecting the pressure angle of involute profile. 依据渐开螺旋面端面渐开线的性质，分析了渐开线基圆变化对渐开线齿形压力角影响。
- Napoleon conquered by the force of an iron will. 拿破仑攻无不克靠的是坚强的意志。
- He's of an age when he ought to settle down. 他已经到了应该安顿下来的年龄了。
- Not confined to an inner circle of disciples or initiates. 大众化的不属于信徒或内行等圈内少数人的
- She had swung round the circle of theories and systems without finding relief. 她对各种不同理论和体系都曾经接受过，但均未能从中找到慰藉。
- There are rumours of an impending merger. 有谣传说是快要合并了。
