【机】 double suction
both; double; even; twin; two; twofold【化】 dyad【医】 amb-; ambi-; ambo-; bi-; bis-; di-; diplo-; par
absorb; attract; inhale; suck; suction; sup; whiff【医】 aspiration; inspiration; inspirium; myzesis; suck; sucking; suction