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公共汽车驾驶员,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.

研究了以乙二胺酰氯为原料制备乙撑双酰胺应,讨论了原料配比、应时间、应温响。

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

本文对醛二甲基二氯硅烷应合成二甲硅基双烯醇醚进行了研究。

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

对其中部分化合物进行了生物活性实验,发现有些化合物显示了较好活性,同时发现烷基取代基引入可以提高除草活性。