single reduction gear unit
die block type gear reduction unit
identical unit or proportional unit of the body
time-rock unit =time-stratigraphic unit
2-grade deceleration straight-tooth gear box
2K-H differential gear trains
2K-H type epicyclic gear trains
2-Stage Star Gear Train
Ⅱ compound gear rotator pump
4-axis CNC spiral bevel gear machine
a new type of oscillating tooth gear transmission