cycloidal pinwheel planetary gear speed reducer
2K-H form planetary transmission
cycloid ball planetary transmission
planetary transmission
行星传动
行星变速箱
行星式传动系
行星齿轮传动
行星齿轮式变速器
行星齿轮机构
行星齿轮装置
行星轮系
易滑面
planetary transmission gearbox
AC transmission line parallelly erected with DC transmission lines
2Z-X D planetary mechanism
acceleration of planetary notion
Atmospheric Planetary Boundary Layer Model
Clutch type planetary gear reducer
comparative planetary science
compound planetary gear
depth of planetary boundary layer
dual planetary gears mechanism
eddy planetary circulation
Equatorial planetary waves
extratropical planetary wave
floating planetary gear