The basic types of gear transmission are external and internal cylindric geardrive, bevel gear drive, worm gear drive.
外啮合圆柱齿轮、内啮合圆柱齿轮、圆维齿轮和蜗轮蜗杆传动是齿轮传动的基本形式。
2
This thesis extended the external cylinder bevel gear transmission into the case of internal cylinder bevel gear transmission, and apprited it into the offset planetary drive of bevel gears.