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X波段1 GHz宽带多注速调管的研制 被引量:1
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作者 郑建一 李冬凤 +2 位作者 李晓明 刘颖琴 茹利娟 《真空电子技术》 2022年第3期65-68,共4页
本文介绍了一种X波段1 GHz宽带多注速调管,该速调管工作于TM_(110)基模,采用多个分布作用谐振腔实现了1 GHz的输出带宽,相对带宽超过10%,带宽水平达到国际先进水平。
关键词 1 GHz 多注速调管 分布作用
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East and West: Different Perceptions of Effective Ethos Exhibited in Chinese and American College Students' Persuasive Essays
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作者 liu ying-qin 《Sino-US English Teaching》 2013年第6期439-451,共13页
This paper studies how different cultural values and rhetorical traditions may influence students' perceptions and understanding of effective ethos in persuasive essays. Fifty Chinese EFL (English as a foreign langu... This paper studies how different cultural values and rhetorical traditions may influence students' perceptions and understanding of effective ethos in persuasive essays. Fifty Chinese EFL (English as a foreign language) college students and 50 American college students participated in writing English persuasive essays on the selected topics. The essays were then compared for similarities and differences in the use of rhetorical appeals with a focus on ethos, the credibility, and trustworthiness of an author. The study revealed that participants from both groups established ethos as an important rhetorical tool to persuade the audience to accept their viewpoints. However, they displayed different perceptions of what effective ethos entailed. For Chinese participants, effective ethos seemed to come from using detailed explanations that reflected an author's intention to advocate an ethical or moral message based on some Chinese cultural values. But, strong ethos for American participants appeared to mean the use of evidence--facts and personal testimony--to establish the writer's trustworthiness. The interpretation of the results from the perspective of different cultural value orientations was also discussed. 展开更多
关键词 ETHOS percussive essays cultural values intercultural rhetoric
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