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“高中英语写作能力提高”课题实验总结 被引量:1
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作者 欧志敏 《社科纵横》 2004年第3期155-156,共2页
写作是高中英语教学中最重要的环节之一 ,通过有目的、有计划的写作训练并紧扣课文 ,使学生逐步掌握写作策略 ,以达到学好英语的目的。
关键词 高中英语写作 写作策略 写作率
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Effects of parameters on the performance of amorphous IGZO thin films prepared by RF magnetron sputtering
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作者 牛建文 马瑞新 +3 位作者 王媛媛 李士娜 程诗垚 刘子林 《Optoelectronics Letters》 EI 2014年第5期347-351,共5页
Amorphous indium-gallium-zinc oxide (IGZO) transparent conductive thin films are prepared on glass substrates by radio frequency (RF) magnetron sputtering. The effects of seven factors, which are substrate tempera... Amorphous indium-gallium-zinc oxide (IGZO) transparent conductive thin films are prepared on glass substrates by radio frequency (RF) magnetron sputtering. The effects of seven factors, which are substrate temperature, sputtering atmosphere, working pressure, sputtering power, annealing temperature, negative bias voltage and sputtering time, on Hall mobility, transmittance and surface roughness are studied through orthogonal experiments. The results show that the effects of working pressure, substrate temperature and sputtering atmosphere on performance of films are the most prominent. According to the experimental results and discussion, relatively reasonable process parameters are obtained, which are working pressure of 0.35 Pa, substrate temperature of 200 ℃, sputtering atmosphere of Ar, sputtering power of 125 W, sputtering time of 30 min, negative bias voltage of 0 V and annealing temperature of 300 ℃. 展开更多
关键词 Bias voltage Magnetron sputtering Substrates Surface roughness Thin films
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