Frictional contact multipole - bem analysis of traction field in screw pairs 轧机压下螺纹副不等厚螺牙面力场的多极边界元解析
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Main products include suited offset point imprinter bearing sets comber gear for weaving industry metal mould and gear vacuum gear synchro gear worm worm wheel . acme whorl fitting and all kinds of fittings with various gears 主要产品：印刷行业各种胶印机和印后设备轮及轴承套，纺织行业精梳机轮，金属板材压延模具和轮，真空泵轮同步带轮蜗杆蜗轮副acme螺纹副各种直斜锥及各种盘类和轴类件等机械加工件。
