齿轮是各种机械中应用很广的传动零件,长期来对其基本术语已有一定的习惯用语。现在我国为了使基本术语更加确切、严密和统一起见,已制订并实施国家标准《齿轮基本术语》GB3374-82,其中有少数术语与过去习惯术语有所不同。为了更好地贯彻国家标准,现简介如下,希望在书刊和各种技术文件中能采用标准术语。延伸渐开线Prolate involute过去多译为“延长渐开线”。切齿干涉Cutter interference过去多译为“根 Gear is widely used in a variety of mechanical transmission parts, the basic term has long been a certain idioms. At present, in order to make the basic terms more precise, rigorous and unified, our country has formulated and implemented the national standard “Basic Gear Terms” GB3374-82, of which a few terms are different from the past ones. In order to better implement the national standards, the brief introduction is as follows, hoping to use standard terminology in books and various technical documents. Extending the involute Prolate involute in the past translated as “extended involute.” Cutter interference in the past mostly translated as "root