【电】 two-tone keying
twin; two
【计】 binary-coded decimal; binary-coded decimal character code
binary-to-decimal conversion; binary-to-hexadecimal conversion
【医】 bi-; bis-; di-; duo-
aspirate; news; sound; tone
【医】 bruit; note; phon-; phono-; sonus; sound; tone
key-press
【电】 keying