CGR-D08SE/1BCGR-D120CGR-D120E/1B CGR-D120TCGR-D14CGR-D14S CGR-D16CGR-D16A/1BCGR-D16S CGR-D16SE/1BCGR-D210CGR-D220 CGR-D220ACGR-D220A/1BCGR-D220E/1B CGR-D28A/1BCGR-D28SCGR-D320 CGR-D320A/1BCGR-D320E/1BVBS0419 ...
车削奥氏体不锈钢外圆,工件硬度HB200,直径d=75mm,切深aP=3mm,走刀量fn=0.2mm/r,切削速度vC=230m/min,加工长度为L=100mm,切削所需时间T=()min。 A.0.3 B.0.47 C.0.80 D.1.0 你可能感兴趣的试题 单项选择题 金属切削加工时,切屑的颜色可反映切削过程中的温度,它可以帮助判断切削参数是否选择合理,当加工...
The current codes in practice define fatigue load models (FLMs) to characterize the bridge damage that is induced by traffic loads. However, most FLMs are specified to load on any single traffic lane, and the characteristics of the uneven traffic load distribution over multiple lanes under real-...