三牙轮扩眼器
three-point roller reamer
可调式扩眼器
adjustable expanding reamer
半自动数显锥齿轮滚动检查机
semi-automatic bevel gear tester with digital display
被动式滚转控制
passive roll control system
差速器滚动力矩检查
differential rolling torque check
车轮滚动系数
wheel rolling coefficient
单凸缘滚轮轮面
single flange roller tread
复式滚动活齿传动
compound rolling teeth transmission
滚动扩边潜力
Potentials of Rolling Extension