甲胺

SiO2 aerogel was prepared by using waterglass as the Si source, formamide as the catalyst and glycol as the drying chemical controlling additive via sol-gel method and ambient pressure drying.

以水玻璃为硅源，甲酰胺为催化剂，乙二醇为干燥控制化学添加剂，采用溶胶－凝胶法常压下干燥制备了硅石气凝胶粉体。

The reasons of iron ions content overproof in grade Ⅱ desalting water system,such as variation water quality,contamination of regenerant , operation adjustment of pretreatment system and switching operation of bed were discussed.

对二级脱盐水系统中铁离子含量超标的原因，如来水水质发生波动、再生剂受到污染、预处理系统操作调整、床体运行切换等进行了论述。

You were hired to drum up new business, so go and do it.

公司雇你招徕新业务，你就做你的事好了。