他在伦敦学习期间，学的英语免费论文网。%。
之前一些研究结果显示，免费论文的下载和被引用次数高于那些需要付费订阅的论文，霍顿的研究模型便基于这些研究。
Houghton's model relies on studies suggesting that free papers are downloaded and cited more often than papers available only by subscription.
进入栏目免费论文付费论文职称论文毕业论文转让论文论文指导外文翻译检测论文当矿井主通风机倒机时，在倒机的短暂停风时间内，高突矿井出现瓦斯超限现象。
When main ventilator of mine is switching, high outburst mines will appear over-limit phenomenon of gas concentration in short blowing-out time of switching ventilator.
进入栏目免费论文付费论文职称论文毕业论文转让论文论文指导外文翻译检测论文通过引入代理人的异质性、任务难度这两个特殊变量，探讨其与薪酬差距间的相互关系。
By introducing two special variables, namely the heterogeneity of agents and the task difficulty, this paper investigates the inter-relationship between the two variables and the salary gap.
进入栏目 免费论文 付费论文 职称论文 毕业论文 转让论文 论文指导 外文翻译 检测论文应县木塔位于山西省应县佛宫寺内，为全国第一批重点文物保护单位。
Yingxian wooden pagoda locates in Fogong Temple, Ying County, Shanxi Province, and it has been listed the first batch of key historical sites under state protection.
进入栏目免费论文付费论文职称论文毕业论文转让论文论文指导外文翻译检测论文转镜式高速相机作为高速摄影设备，具有高达p S级的时间分辨本领，起到了扩展人眼功能的作用。
As high-speed photographic equipment, the high speed Rotating Mirror Camera can easily extend the capability of human eyes, with the pS level's time resolution ability.
进入栏目 免费论文 付费论文 职称论文 毕业论文 转让论文 论文指导 外文翻译 检测论文在教学实践中，本人对学案 学习效果不佳产生了疑问，进行了观察和反思，认为问题主要出在学案设计上。
In the teaching practice, the author has doubts of poor learning in the case study, conducting observation and reflection, the author thinks the main problem lies in the case study design.
进入栏目 免费论文 付费论文 职称论文 毕业论文 转让论文 论文指导 外文翻译 检测论文在教学实践中，本人对学案 学习效果不佳产生了疑问，进行了观察和反思，认为问题主要出在学案设计上。
In the teaching practice, the author has doubts of poor learning in the case study, conducting observation and reflection, the author thinks the main problem lies in the case study design.
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