| 摘要 |
A power train of an automatic transmission includes an input shaft connected to a torque converter; an output gear; a transmission case; a first planetary gear set including a first operating member fixedly connected to the input shaft, a second operating member fixedly connected to the transmission case, and a third operating member; a second planetary gear set including a fourth operating member selectively connected to the third operating member, a fifth operating member selectively connected to the input shaft, second or third operating members, a sixth operating member selectively connected to the input shaft or transmission case, a seventh operating member selectively connected to the transmission case, and an eighth operating member acting as an output element, wherein the second planetary gear set outputs ten forward speeds and two reverse speeds; and a plurality of friction members selectively connecting the operating members, input shaft, or transmission case.
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