degree of roundness是什么意思

用法例句

The measurement, analysis and adjustment jobs about cylindrical grinding of the labyrinth rings of the hydroturbine runner are described.

介绍水轮机转轮上下止漏环工地车磨圆时应进行的测量 ,分析及调整工

Design of cylindrical milling cutter with circular grinding in assembly;

装配式圆磨圆柱形铣刀的设计