英和和英

rotary motion

rotary motion

rotational inertia

alternating back-and-forth movement

reciprocating motion

orbital revolution

rolling friction

rolling friction

an electrical or electronic circuit called {differential amplification circuit}

circular motion

of the manner in which something is revolving or turning, repeatedly

rectilinear motion

a rotary motion

a revolving chair

the action of spinning something

angular momentum

to flutter and turn

radial velocity

displacement tonnage

displacement tonnage

a mechanism called a differential gear

accomplish by rotating

of a direction of a wave, the condition of being changeable

turn sharply

rotating

turn on a pivot

have a turn

to turn round a fixed point

a rolling or revolving motion

doing twirls