| 摘要 |
A gear comprises gear teeth. An annular web has the gear teeth on an external surface thereof and rotatable about a rotational axis of the gear. The web comprises a wall having at least a first axial surface and a second axial surface on the opposite side of the wall. The web defined by a first web section in which the first axial surface, in an inward direction, inclines away from a radial plane to which the rotational axis is normal, a second web section radially inward of the first web section, and in which the first axial surface, in the inward direction, inclines toward said radial plane. |
