zhuàn dòng
to rotate (about an axis)
to revolve
to turn
to move in a circle
to gyrate
zhuǎn dòng
to turn sth around
to swivel
zhuǎn dòng guàn liàng
moment of inertia (mechanics)
zhuàn dòng zhóu
axis of rotation (mechanics)
spindle
zhuàn dòng qū bǐng
to turn the handle
to crank