Việt
sự hồi chuyển
sự quay tròn
chuyển động quay
Anh
gyration
circle
crock
crook
spinning
spin-up
turn-around
pivoting motion
rotational motion
rotational movement
semirotary motion
slewing motion
circle, crock, crook, gyration, spinning, spin-up, turn-around
gyration, pivoting motion, rotational motion, rotational movement, semirotary motion, slewing motion