【电】 biphase rectification
both; double; even; twin; two; twofold
【化】 dyad
【医】 amb-; ambi-; ambo-; bi-; bis-; di-; diplo-; par
each other; mutually; appearance; looks; look at and appraise; photograph
posture
【化】 phase
【医】 phase
commutate
【医】 rectification