Dianci bileiqi, 1976 金属表面覆盖碳化钛,可提高刀具、工模具的寿命和耐磨性。电瓷厂生产上使用的修坯刀在常压条件下进行覆盖碳化钛的试验,提高了修坯刀的使用寿命。现在这项新工艺已用于生产。本文介绍了实验的基本原理、所用设备、工艺流程以及问题讨论等有关方面的问题。
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Gaoya dianqi, 2013 电力是国民经济的动力,而5.12汶川发生8.0级大地震后,变压器相当于经历了一次超出相应承受能力的破坏性试验,损失严重。为科学了解和分析变压器受灾情况,以确保现有投运变压器的安全可靠运行,有必要对震后变压器的受损程度及剩余寿命进行调研和评估,从而为变压器的全寿命周期管理和安全运行提供依据。该研究把统计学、数值分析、神经网络、管理科学及建筑学等多类学科融入到变压器震后剩余寿命评估中,建立了基于可靠性的变压器震后剩余寿命评估柔性模型。通过对汶川地震后四川省十三个地区变压器震前和震后的数据抽样收集、整理 ...
张蓬鹤, 邓泽官, 吴巍, 李龙江
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[Performance evaluation of different filtration fractions during daytime continuous renal replacement therapy]. [PDF]
Zhejiang Da Xue Xue Bao Yi Xue BanWang L, Chen Y, Xu G, Xu C.
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[Construction and practice of the "Construction Supports Competitions-Competitions Nurture Teaching-Teaching Promotes Learning" closed-loop innovative teaching mode： a case study of micro-plasma emission spectrometer setup and trace element analysis experiment]. [PDF]
Se PuXue WY +8 more
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[Research on the current situations of reliability and evaluation in Chinese active medical device industry]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za Zhi, 2022 Zhu J +5 more
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[Protective effects of escin and dextromethorphan on Alzheimer disease in <i>Caenorhabditis elegans</i> models]. [PDF]
Beijing Da Xue Xue Bao Yi Xue BanZhang Y, Li L, Zhu A, Xiao W, Wang Q.
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[Determination of trace polychlorinated biphenyls in environmental water samples by solid-phase microextraction-gas chromatography-tandem mass spectrometry using carbon nanotube composite microspheres materials]. [PDF]
Se PuSong XL +4 more
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Sheng Wu Yi Xue Gong Cheng Xue Za ZhiPang B, Yang S, Han H, Zhang X, Song T.
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Dianci bileiqi氧化锌压敏电阻在重复过电压下性能会逐渐劣化，最终可能导致短路、起火或爆炸，目前单次耐受测试无法全面反映ZnO压敏电阻在实际使用中的预期性能，亟需对其冲击老化特性及失效机理进行深入研究。文中建立了ZnO压敏电阻重复冲击电流试验实验平台，研究了以压敏电压、冲击残压及泄漏电流为表征的ZnO压敏电阻保护特性劣化特性。研究结果表明，压敏电阻的冲击老化寿命随着冲击密度的增加而显著减少，这是由于电阻片尺寸效应引起的微观缺陷增加所致。此外，不同电流幅值条件下的冲击间隔对老化过程也有显著影响 ...
李宣健楠 +4 more
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[Efficacy of Transfer Energy Capacitive and Resistive Therapy Combined With β-Hydroxy-β-Methylbutyrate Nutritional Supplementation in Older Adults With Sarcopenic Obesity]. [PDF]
Sichuan Da Xue Xue Bao Yi Xue BanWang R +4 more
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