Receive detailed information on machine tools for various materials , machine cutters and cutter knives , bowl - chopper knives or on other machine tools with the enterprise steffens g walter gmbh co Steffens g walter gmbh co公司积累了多年经验，在自己的网页上这家企业为您介绍其它的专门产品，例如关于绞刀,机用刀片（刀齿） 、机用切刀,用于各种原料的机械工具,其它机床。
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Because of these insufficiency , this paper described the mechanism and discipline of technology diffusion and empirical analysis about it based on the study of the basic conception , model and mechanism and three perfect mathematic models such as bass model , logistic model and steffens - murthy model . this paper set up four economic mathematic models as follows 本文在充分分析技术创新扩散的基本概念、基本模式、基本机制以及借鉴技术创新扩散研究中相当成熟的三个模型： bass模型、 logistic模型和steffens - murthy模型的基础上，进一步从定量分析的角度对技术创新扩散的机理和规律进行了探讨，并进行了相关的实证分析。
