【化】 ethanediylidene; ethanetetrayl
couplet; join; unite
【医】 sym-; syn-
twin; two
【计】 binary-coded decimal; binary-coded decimal character code
binary-to-decimal conversion; binary-to-hexadecimal conversion
【医】 bi-; bis-; di-; duo-
methylene
【化】 methene; methylene
【医】 methene