Question

ammonium carbamate
ammonium carbamate  
n.（名词）
    A salt, a carbonate of ammonium, NH₄NH₂CO₂, which is an intermediate in the manufacture of urea and a component of smelling salts.
    氨基甲酸铵：一种盐，即铵的碳酸盐，NH₄NH₂CO₂，是制造尿素的中间产物和嗅盐的一种成分