ferroconcrete beam bridge
ferroconcrete frame structure
ferroconcrete structures
large ferroconcrete structure
the pipe support of ferroconcrete
(E)-3-(4-hydroxyphenyl)-1-(piperidin-1-yl)prop-2-en-1-one derivatives
(E)-3-(4-羟苯基)-1-(哌啶-1-基)丙-2-烯-1-酮衍生物