“基面”怎么读

检测圆锥管螺纹基面中径的方法有很多,但测量过程复杂.There are many ways to measure base - level pitch diameter of cone - shaped thread.基面要求: 表面不应有积水 、 灰尘 、 漆膜 、 油污.The base level requirements: there should be no surface water, dust, paint, grease...

“基面”的英语可以翻译为：cardinal plane，datum，[地质] interarea，base level ...