测试结果表明，增加联二脲添加量可以降低胶粘剂烟雾信号；
The results revealed that the smoke signal of adhesive can be reduced by increasing the content of LDA.
对用分子氧催化氧化联二脲制取ADC 发泡剂进行了探讨。
The preparation of ADC foaming agent from biurea by dioxygen catalytic oxidation was investigated and discussed.
联二萘酚作为配体在催化不对称反应方面取得了极大的成功，是有机化学家研究的热点。
The study of optical active R-or S-binaphthol and its derivatives as excellent chiral ligands in asymmetric catalytic reaction has obtained significant progress.
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