【电】 backswing
back
【医】 back; dorsa; dorsi-; dorso-; dorsum; noto-; opistho-; tergum
always; at; be partial to; direction; face; out; to; toward
【医】 ad-; ak-; ob-
flutter; sway; swing; switch; twitter; wag; waver; wiggle; wobble
【化】 pendular oscillation; pendulation; segmental motion; swing
【医】 oscillate; oscillation; oscillo-; pendular movement