英文名称 a Spur Gear iransmission Helical gear transmission crossed-aXIS helical gears Bevel gear transmission a Straight bevel gears Spiral Bevel gears(螺旋伞齿轮) ZEROL Bevel gears(a type of Spiral Bevel Gears with a zero spiral angle Hypoid Gears(准双曲面伞齿轮) Herringbone Gear Transmission Worm gear transmission英文名称 „ Spur Gear Transmission „ Helical Gear Transmission „ Crossed-axis helical gears „ Bevel Gear Transmission „ Straight Bevel Gears „ Spiral Bevel Gears (螺旋伞齿轮) „ ZEROL Bevel Gears (a type of Spiral Bevel Gears with a zero spiral angle) „ Hypoid Gears (准双曲面伞齿轮) „ Herringbone Gear Transmission „ Worm Gear Transmission