头轮 meaning in Chinese

head block
head pulley
head sheave

This is the first time capriati has fallen in the opening round of a grand slam event
这是她第一次在大满贯杯赛中头轮比赛就败下阵来。
I guess you are talking about the ackerman . . . the outer wheel turns more angle than the inner wheel
头轮在转向时的平衡角度,现今很多车手喜欢用不平衡角度
1 driving part : this machine adopts triangle beltdouble - grade drive for shaft speed reducer , speed reducer is installed on shaft head of driving roller ; all driving devices are installed on the machine frame viahead sheave rack and motor rack
1驱动部分：该机采用三角皮带轴装式减速器两级传动，减速器套装在传动滚筒的轴头上全部传动装置通过头轮架和电机架悬挂安装在机架上。