steffens 中文意思是什麼
steffens
解釋
n. 名詞 斯蒂芬斯〈姓氏〉。-
Steffens next studied political affairs in several states.
斯帝芬斯接著研究幾個州的政治狀況。 -
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公司積累了多年經驗，在自己的網頁上這家企業為您介紹其它的專門產品，例如關于絞刀，機用刀片（刀齒） 、機用切刀，用於各種原料的機械工具，其它機床。 -
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
本文在充分分析技術創新擴散的基本概念、基本模式、基本機制以及借鑒技術創新擴散研究中相當成熟的三個模型： bass模型、 logistic模型和steffens - murthy模型的基礎上，進一步從定量分析的角度對技術創新擴散的機理和規律進行了探討，並進行了相關的實證分析。
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