Dianci bileiqi, 2013 对额定电压10 kV的设计B类有机避雷器进行了预击穿短路试验,验证了IEC60099-4Ed2.2:2009和GB11032-2010中的预击穿短路试验程序。试验表明:电压源法预击穿电压的范围为避雷器参考额定电压的1.081.13倍,击穿时间为28 min。并且,短路大电流试验时,试品电流波形延后其电压波形约1个周波,而标准中规定的预击穿试验与短路电流试验之间时间间隔及再击穿试验等对短路试验的结果影响不大。
贾东旭, 石莉敏, 弥璞, 桑建平
doaj
[Research progress and clinical application of allergen nasal provocation test]. [PDF]
Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi, 2023 Han J, Lu M, Cheng L.
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[Analysis of Salivary Microbiota Characteristics in Patients With Pulmonary Nodules: A Prospective Nonrandomized Concurrent Controlled Trial]. [PDF]
Sichuan Da Xue Xue Bao Yi Xue Ban, 2023 Ren Y +8 more
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[A Randomized Controlled Clinical Trial of Acupuncture at the Sphenopalatine Ganglion for the Treatment of Allergic Rhinitis]. [PDF]
Sichuan Da Xue Xue Bao Yi Xue BanHuang J +7 more
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[Evaluation of subjective scale in allergen nasal provocation test]. [PDF]
Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi, 2023 Shen L +7 more
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H2O2发动机应用于临近空间球载飞行器投放试验的环境适应性研究
针对临近空间球载发射飞行器的特殊环境，对以过氧化氢（H2O2）为推进剂的发动机试验系统进行了地面测试，同时开展环境适应性研究。结果表明，H2O2作为推进剂的单组元发动机系统方案安全性和环境适应性良好、易于使用，H2O2可作为未来球载发射飞行器动力推进剂选择。测试方案中通过PTC加热片，结合温控开关以及保温材料，将发动机储液罐和喷管壁面的温度维持在38～42℃，满足飞行器真实飞行环境要求 ...
张玉锋 +4 more
core +2 more sources
[Chinese introduction to the Preferred Reporting Items for Randomized Trials in Endodontics 2020 checklist]. [PDF]
Hua Xi Kou Qiang Yi Xue Za ZhiPang X +5 more
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Quality evaluation of the literature on clinical randomized controlled trials of traditional Chinese medicine for treatment of gastric precancerous lesions in the past 20 years. [PDF]
Zhejiang Da Xue Xue Bao Yi Xue Ban, 2023 Zhang Q +5 more
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[Considerations on clinical trial issues related to new drug development for metabolic and alcohol-associated liver disease and fatty liver disease]. [PDF]
Zhonghua Gan Zang Bing Za ZhiWang XY, Sun HM, Gao YH.
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