bis-

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汽车驾驶员,从来不考虑自己有什么责任。

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

研究了以乙二胺和硬脂酰氯为原制备乙撑双硬脂酰胺反应,讨论了原配比、反应时间、反应温度影响。

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

本文对醛和二甲基二氯硅烷反应成二甲硅基双烯醇醚行了研究。

Some experiments were did on herbicide activity, and had found that activities of some compounds was good,especially 3,6-bis-benzyl-s-tetrazine.

对其中部分化行了生活性实验,发现有些化显示了较好活性,同时发现烷基取代基引入可以提高除草活性。