Objective:Analyzing the affecting factors of forming competent cells of Escherichia coli JM109 to increase transformation efficiency.

目的：分析大肠杆菌JM109感受态形成因素，提高转化效率。

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The reason for this transformation is that intra and inter-business electronic links greatly increase the efficiency of production, planning, the collecting of information and data exchange.

其原因就是企业内部和企业之间的电子网络极大地提高了生产、规划、信息收集以及数据交换的效率。

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A significant increase of transformation efficiency was revcaled with the homologous plasmid isolated from recipient itself since the effects of host restriction and modification werc avoided.

来自受体菌自身的同源质粒，因克服了宿主的限制一修饰性，可以极显著地提高电转化效率。

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Of the six sectors needing transformation to increase efficiency and reduce oil use -- cars, trucks, planes, fuels, finance and military -- three or four are near or past their tipping point and starting to get easier.

CNN: Freeing America from its addiction to oil