【医】 脲廓清试验(检肾机能)

Urea Fertilizer

Precondensed Urea-Formaldehyde Resin(UF-80)

high-dose urea in invert sugar

dichloro-urea

Urea-Z(=Urea-Acetaldehyde)

urea formaldehyde resins

Edeleanu urea dewaxing process

urea-formaldehyde moulding powder