bis-

In this thesis, the reaction of aldehydes with dimethyl -- dichlorosilane producingdimethylsilyl bis -- enol ethers has been studied.

本文对甲基氯硅烷反应合成甲硅基双烯醇醚进行了研究。

Our neighbour's a very careless bis driver; he never thinks about what he's responsible for.

我们邻居是个粗心大意公共汽车驾驶员,从来不考虑己有什么责任。

Preparation of ethylene bis stearamide using stearyl chloride and ethylenediamine (EDA) as raw materials has been studied.

研究了以乙胺硬脂酰氯为原料制备乙撑双硬脂酰胺反应,讨论了原料配比、反应时间、反应温响。