diametern.直径
diameter index safety system直径指数安全系统
Diameter range of work piece工件加工直径
diameter of a linear complex线性线丛的直径
diameter of sieve plate hole筛孔孔径
Diameter of air exhaust pipe排风管道直径
diameter structure regularity直径结构规律
diameter measuring instrument测径计
diameter of tumor microvessel肿瘤微血管直径