| 摘要 |
A transmission includes a first gear set with a first sun gear member rotatable about a first axis of rotation, a first carrier member, and a first ring gear member radially outward of and concentric with the first sun gear member. The first ring gear member has a radially inward-facing surface with inner teeth and a radially outward-facing surface with outer teeth. A second gear set has a second carrier member, and a second ring gear member radially outward of and concentric with the first ring gear member. The second ring gear member has a radially inward-facing surface with inner teeth. A first annular gear has a radially inward-facing surface with inner teeth and a radially outward-facing surface with outer teeth. The first annular gear is rotatable about a second axis of rotation and meshes with the first ring gear member.
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