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粗糙度直径
1、pitch diameter───层心直径，（齿轮的）节径，（螺纹的）中径；[机]节圆直径
2、inside diameter───[数]内径
3、equatorial diameter───赤道直径（等于12753.44公里）
4、diameter───n.直径
5、outside diameter───外直径；外径
6、roughness average───平均粗糙度
7、roughness───n.粗糙（度）；粗暴；猛烈；篷乱毛发；未加工
8、dime diameter───一角直径
9、shilling diameter───先令直径
1、investigates the life of diamond wire and effects of process parameters on the reduction of the wire diameter, warp and surface roughness.───研究了金刚石线的寿命及各切割参数对线径减少量、翘曲度、表面粗糙度的影响。
2、feasibility of the application of microarc oxidation technique to the treatment of inner surface of steam cylinder was studied by measuring the change of inner diameter, roughness and bench test.───通过研究缸体的内径变化、陶瓷层的粗糙度和台架试验探讨将微弧氧化技术应用于铝制小型汽油机缸体的内表面处理的可行性。