绕着另一个圆圈滚转的圆圈；产生外摆线或内摆线。
A circle that rolls around another circle; generates an epicycloid or '.
作旋转的肾脏线和旋转的三瓣外摆线，且彼此维持正交。
Construct rotating nephroid and three-cusped epicycloid while remaining orthogonal to each other.
缸体的实际型线是双弧外摆线的等距曲线，并由此导出其数学表达式。
The actual cylinder shaped conductor is isometric curve of double arc outside cycloid and its mathematic expression was deduced.
本文提出了用最优化圆弧代替长幅外摆线轮齿廓曲线的一种新型算法。
In this paper, a. new algorithm substituting an optimized round arc for the outline of tooth curve of an epicyclic gear tooth with long amplitude is discussed.
双摆线齿轮减速器是应用外摆线内等距曲线作为齿轮齿廓曲线的一种新产品。
The double cycloid gear reducer is a kind of new product which applies external cycloid internal equidistant curve as the curve of gear flank profile, It is characterized by;
根据延伸外摆线准双曲面齿轮的特点，提出一种精确计算其分度锥面几何参数的新方法。
According to the feature of epicycloid hypoid gear, a new method is proposed to calculate the geometric parameters of pitch cone accurately.
今天最常用的旋转泵是外齿轮泵、内齿轮泵、摆线转子泵、滑动叶片泵和螺旋泵。每种类型的泵都有优点，适合于特定场合的应用。
The most common rotary-pump designs used today are spur-gear, generated-rotary, sliding-vane, and screw pump, each type has advantages that make it the most suitable for a given application.
今天最常用的旋转泵是外齿轮泵、内齿轮泵、摆线转子泵、滑动叶片泵和螺旋泵。每种类型的泵都有优点，适合于特定场合的应用。
The most common rotary-pump designs used today are spur-gear, generated-rotary, sliding-vane, and screw pump, each type has advantages that make it the most suitable for a given application.
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