【化】 speed reducer
speed-down; deceleration; retard; slowdown; throttle
【计】 decrease speed
【医】 deceleration; negative acceleration
【经】 decelerate
device; apparatus; fitting; installation; setting; unit
【计】 blaster; U
【化】 equipment; set; set up; setting
【医】 apparatus; device; fitting; installation; mounting; unit
【经】 equipment; installation