Teaching evaluation is an important part of the teaching process of college English courses,and effective formative assessment can reflect the entire teaching process from multiple perspectives and ensure the smooth a...Teaching evaluation is an important part of the teaching process of college English courses,and effective formative assessment can reflect the entire teaching process from multiple perspectives and ensure the smooth achievement of teaching objectives.Formative assessment is an assessment that runs through the entire learning process,based on humanism and constructivism,with various forms of evaluation.展开更多
利用硅烷偶联剂KH550对白炭黑纳米粉体进行表面接枝改性,并制备改性白炭黑(m Si O_(2))/环氧树脂(EP)浇铸体,利用傅里叶变换红外光谱(FTIR)、X射线衍射(XRD)、粒度分析、拉伸性能测试、热重分析(TG)、扫描电镜(SEM)等手段对改性前后的...利用硅烷偶联剂KH550对白炭黑纳米粉体进行表面接枝改性,并制备改性白炭黑(m Si O_(2))/环氧树脂(EP)浇铸体,利用傅里叶变换红外光谱(FTIR)、X射线衍射(XRD)、粒度分析、拉伸性能测试、热重分析(TG)、扫描电镜(SEM)等手段对改性前后的白炭黑粒、m Si O_(2)/EP浇铸体进行表征分析,探究了KH550对白炭黑的改性效果以及m Si O_(2)用量对浇铸体力学性能、耐热性和结构的影响。结果表明:以异丙醇作为分散剂,当KH550质量分数为20%,反应温度为90℃,反应时间为5h,在醇、水混合溶剂中可以实现KH550对白炭黑的表面改性;当改性白炭黑用量为8%(wt.)时,浇铸体综合性能最好,拉伸强度为41.29MPa,较纯EP提升了95.2%;其最大分解速率时的温度为377℃,较纯EP提升了14℃。展开更多
Translation is not only an exchange activity among languages, but also a process about transformation and communication of culture. Language and culture is a unity that language is the essential part of culture while ...Translation is not only an exchange activity among languages, but also a process about transformation and communication of culture. Language and culture is a unity that language is the essential part of culture while culture is the nature and content of language communication. Because of its own history and distinctive geographical environment, culture has its unique ethnic features and psychological construction. All of these culture elements reflect on language. For different languages, there are great differences about the glyph, sound, words, rhetorical devices, and idioms. Such differences in language and culture between English and Chinese can cause the limitation of translatability in the process of translation.展开更多
In the era of rapid development of information technology,the field of education continues to promote the process of information,and college English classroom is no exception.The integration of Internet technology and...In the era of rapid development of information technology,the field of education continues to promote the process of information,and college English classroom is no exception.The integration of Internet technology and foreign language teaching gives birth to flipped classroom.It is an important trend of college English teaching in the future to combine information technology with classroom teaching and establish an effective evaluation system.Based on the current situation of college English teaching in China,this paper hopes to explore the construction of flipped classroom and improve the teaching level.展开更多
文摘Teaching evaluation is an important part of the teaching process of college English courses,and effective formative assessment can reflect the entire teaching process from multiple perspectives and ensure the smooth achievement of teaching objectives.Formative assessment is an assessment that runs through the entire learning process,based on humanism and constructivism,with various forms of evaluation.
文摘利用硅烷偶联剂KH550对白炭黑纳米粉体进行表面接枝改性,并制备改性白炭黑(m Si O_(2))/环氧树脂(EP)浇铸体,利用傅里叶变换红外光谱(FTIR)、X射线衍射(XRD)、粒度分析、拉伸性能测试、热重分析(TG)、扫描电镜(SEM)等手段对改性前后的白炭黑粒、m Si O_(2)/EP浇铸体进行表征分析,探究了KH550对白炭黑的改性效果以及m Si O_(2)用量对浇铸体力学性能、耐热性和结构的影响。结果表明:以异丙醇作为分散剂,当KH550质量分数为20%,反应温度为90℃,反应时间为5h,在醇、水混合溶剂中可以实现KH550对白炭黑的表面改性;当改性白炭黑用量为8%(wt.)时,浇铸体综合性能最好,拉伸强度为41.29MPa,较纯EP提升了95.2%;其最大分解速率时的温度为377℃,较纯EP提升了14℃。
文摘Translation is not only an exchange activity among languages, but also a process about transformation and communication of culture. Language and culture is a unity that language is the essential part of culture while culture is the nature and content of language communication. Because of its own history and distinctive geographical environment, culture has its unique ethnic features and psychological construction. All of these culture elements reflect on language. For different languages, there are great differences about the glyph, sound, words, rhetorical devices, and idioms. Such differences in language and culture between English and Chinese can cause the limitation of translatability in the process of translation.
文摘In the era of rapid development of information technology,the field of education continues to promote the process of information,and college English classroom is no exception.The integration of Internet technology and foreign language teaching gives birth to flipped classroom.It is an important trend of college English teaching in the future to combine information technology with classroom teaching and establish an effective evaluation system.Based on the current situation of college English teaching in China,this paper hopes to explore the construction of flipped classroom and improve the teaching level.
