滑动齿轮传动
sliding -gear transmission
滑动齿轮传动系
sliding gear transmission
内平动齿轮传动
interior translation gear transmission
internal parallel move gear transmission
平动齿轮传动
Parallel move gear transmission
变形椭圆齿轮
Deformable elliptic gears transmission
椭圆齿轮行星系分插机构
transplanting mechanism with planetary elliptic gears
准椭球面齿轮传动
quasi-ellipsoid gear transmission