常見例句雙語例句Synthesis and flocculation performance of a new quaternary ammonium salt of lignin.新型木質(zhì)素季銨鹽絮凝劑的合成與絮凝性能。Objective To study efficacy of the mixed disinfectant Glutaraldehyde and Quaternary Ammonium Salt against chicken pathogen microorganism.目的研究戊二醛和季銨鹽復(fù)合消毒劑對(duì)雞常見的幾種病原微生物殺滅效果。The preparation methods of quaternary ammonium salt of chitosan at home and abroad, meanwhile were introduced, and heir advantages and shortcomings were compared.對(duì)目前國內(nèi)外殼聚糖季銨鹽的制備方法加以介紹，并比較了它們的優(yōu)缺點(diǎn)。 返回 quaternary ammonium salt