The features of isocyanate trimer and physical properties of tri-n-butyl-phosphine for isocyanate trimer catalyzer were introduced.
简要介绍了多异氰酸酯三聚体的特点，以及多异氰酸酯三聚催化剂三正丁基膦的物理性质。
The result of paper chromatography is presented which suggests that the fractions are N-acetylglucosamine monomer, dimer and trimer respectively.
纸层析结果表明，这些组分分别为N -乙酰葡萄糖胺单糖、二聚糖和三聚糖。
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