抛物线齿轮是我们新近研究出来的一种新齿廊,它具有很高的抗接触、抗弯曲、抗胶合与抗磨损的能力。本文先就抛物线齿轮的齿形、基本特性及其公法线长度作一简明论述。 Parabolic gears are a new tooth gallery we have recently developed that has high resistance to contact, bending, gluing and abrasion. In this paper, a brief discussion is made on the profile of the parabolic gear, its basic characteristics and the length of its common normal.