Difference from other algebraic structures which are introduced for some logic system , implication algebra is a abstraction of one logic connective , i . e . implicative operator , and other operators in it are all introduced by implicative operator . the main results of this paper is given as the following : 1 特别值得提出的是,与其它为研究逻辑系统而引入的代数结构不同,蕴涵代数是对一个逻辑联结词,即蕴涵算子(蕴涵逻辑联结词)抽象而得到的,其它算子均是由蕴涵算子诱导而得到。
It defines the basic concepts of green marketing , analyses its characteristics of green nature , continuity , external economy , systematicness and cumulativeness , and probes into its implicative thinking in it : green culture , green ethics and green philosophy . secondly , this paper interprets the external working mechanism and the internal realizing mechanism of green marketing 主要内容包括:界定了绿色营销的概念,揭示了其基本内涵;分析了绿色营销的基本特征:绿色性、持续性、外部经济性、系统性和累积性;探讨了绿色营销蕴含的思想:绿色文化观、绿色伦理观和绿色哲学观。
Although english learning and teaching in china is time - consuming with low efficiency and mainly works for examinations , krashen ' s theory on comprehensible input is applicable and implicative to foreign language learning and teaching in china , and has certainly opened another door for chinese to the pursu it of language competence 面对我国英语教育费时低效,应试倾向日趋严重的现状,借鉴克拉申的可理解输入理论指导我国的外语教学必将收到良好的效果。接着作者从宏观和微观上分别阐述可理解输入理论对我国英语教学的启示。
The concept of basic implication algebra and implication algebra on a partial ordered set are obtained by studying the conditions which the implicative operator in a logic system should be satisfied . then the basic properties with different conditions and the characterizes of implication algebra are given . the iff conditions of a ( basic ) implication algebra to be regular are discussed 基于对逻辑系统中蕴涵算子应满足条件的分析,引进了偏序集上基础蕴涵代数和偏序集上蕴涵代数的概念,得到了其在不同条件下的基本性质,给出了(基础)蕴涵代数的特征刻画,以及偏序集上(基础)蕴涵代数成为正则的充分必要条件。