【化】 ethyl diacetoacetate
twin; two
【计】 binary-coded decimal; binary-coded decimal character code
binary-to-decimal conversion; binary-to-hexadecimal conversion
【医】 bi-; bis-; di-; duo-
【化】 acetacetic ester; acetylacetic ester; acetylacetic ether
ethyl acetoacetate
【医】 aceto-acetic ester