Dianci bileiqi复合绝缘子表面的绝缘性直接影响着电网设备的安全运行和可靠性，而对复合绝缘子表面憎水性的评价是判断其绝缘性好坏的重要手段。本文以硅橡胶复合绝缘子为研究对象，在对取自复合绝缘子伞裙的硅橡胶试样进行不同程度地高温老化处理后，利用倾斜平台检测方法获取材料的动态接触角，用于评价复合绝缘子憎水性的好坏。实验中通过规范水滴体积、滴落高度、采集时间等参数来确保实验结果的可靠性和可对比性；电镜扫描分析结果表明：随着材料老化程度的增加，其表面越容易出现长裂纹和凹坑，影响水滴在试样表面的铺展特性，导致材料憎水性下降 ...
刘学术, 杜晓玉, 赵强, 雷建华
doaj
Gaoya dianqi, 2013 对山区同塔双回线路的耐雷性能进行研究,改进基于电气几何模型的山区输电线路绕击率算法,通过引入新判据Rx计算暴露距离,对比Rx与雷电对地击距Rg大小,讨论不同雷电流对应下的暴露距离计算方法,并对典型山区同塔双回线路绕击率进行计算,得出保护角最大的相导线并不是最可能发生绕击的,绕击率的大小与导线高度、保护角、地面倾角有关。通过分析各相线路的暴露距离与雷电流关系,解释某相线路发生绕击的现象。研究结果对同塔双回线路的防雷设计具有一定借鉴意义。
梁贵书 +5 more
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辽河三角洲滨海湿地气候变化分析 Analysis on Climate Change in the Region of Liaohe Delta Coastal Wetland
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野生动物学报, 2004 朋友,你去过中国最大的淡水湖--鄱阳湖吗?这里湖面浩瀚,碧波万倾,白帆点点,渔歌唱晚,湖中水产丰盛。由于气候湿润,自然资源丰富,饵料充足,是白鹤、天鹅、白鹳、黑鹳、鹭类、鹬类等禽类越冬和栖息的理想之地。成为举世瞩目的"鸟类王国"。 鄱阳湖自然保护区位于江西北部,鄱阳湖西北角,赣江 ...
段长征
doaj
[Comparation of anterior maxilla and whole maxilla clockwise rotation to improve paranasal aesthetic defects of skeletal Class Ⅲ maxillofacial deformity]. [PDF]
Beijing Da Xue Xue Bao Yi Xue BanSong F, Xu X, Liu X, Li Z.
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[Advances in application of digital technologies in surgery for ankylosing spondylitis]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiYang H, Liu L, Kang N.
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