Pfeilverzahnung (Feminin)

double-helical gearing (Neutrum)

double-helical teeth (Neutrum)

herringbone gearing (Neutrum)

herringbone teeth (Neutrum)

diente de espiga (Neutrum)

diente doble helicoidal (Neutrum)

engranaje doble helicoidal (Neutrum)

人字齿 (Neutrum)