Grinding gear with the toroidal involute interior threadworm grind wheel is a new kind of process in hard surface gear finish machining.
渐开面包络环面内螺纹蜗杆砂轮磨齿，是一种硬齿面齿轮精加工的新型工艺。
2
Grinding gear with the toroidal involute interior threadworm grind wheel is a new kind of process in hard surface gear finish machining.
针对面齿轮硬齿面磨削加工中存在的困难，提出用蜗杆砂轮磨削的双参数法来磨削面齿轮。
3
Dracunculiasis (more commonly known as guinea-worm disease) is a crippling parasitic disease caused by Dracunculus medinensis, a long thread-like worm.