Results 81 to 90 of about 371,455 (122)

配电型避雷器结构的新探讨

open access: yesDianci bileiqi, 1988
本文介绍一种新型配电型避雷器,不用密封瓷套而用环氧玻璃缠绕管、硅橡胶套。使避雷器腔体内游离气体容量减至最小,潮气不可能进入。即使发生故障,也不会发生瓷套爆炸事故。对绝缘套进行了多种特殊试验以检验其有机材料有关的性能,证明其性能良好 ...
doaj  

[Applications and challenges of ultra-high molecular weight polyethylene fibers in minimally invasive medical devices]. [PDF]

open access: yesSheng Wu Yi Xue Gong Cheng Xue Za Zhi
Shi S   +9 more
europepmc   +1 more source

[Comparison of apical sealing ability of three bioceramic root canal sealers in vitro]. [PDF]

open access: yesHua Xi Kou Qiang Yi Xue Za Zhi
Zhu J, Huang R, Zeng X, Jiang L, He F.
europepmc   +1 more source

[Surgical planning and mid-term effectiveness of four major lower extremity arthroplasties in patients with rheumatoid arthritis]. [PDF]

open access: yesZhongguo Xiu Fu Chong Jian Wai Ke Za Zhi, 2022
Sun B   +6 more
europepmc   +1 more source

500 kV变压器卡扣式套管抗震加固方法拟静力试验研究

open access: yesGaoya dianqi
震害调查表明500 kV变压器卡扣式套管的地震易损性较高,为了提高其抗震性能,文中针对500 kV卡扣式套管提出了抗震加固方案,并且对未加固以及不同加固方法的卡扣式套管进行了反复加载作用下的试验研究,对比了不同加固方法下套管的破坏形式以及对抗震性能改善的结果。结果表明:在强震作用下,卡扣式套管的弹簧卡扣对瓷质套管的约束不足,未加固情况下易发生漏油破坏。法兰空腔内注环氧树脂可以有效提升卡扣式套管的抗震性能。加固后,卡扣式套管法兰节点整体性显著提升,各部件间整体协同变形 ...
马清越, 薛志航, 张郑楠, 谢强
doaj  

[Case of tooth autotransplantation with robotic surgery assistance]. [PDF]

open access: yesHua Xi Kou Qiang Yi Xue Za Zhi
Liu Y   +6 more
europepmc   +1 more source

[Research progress of electroactivity graphene-based materials in bone repair]. [PDF]

open access: yesZhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Kang R, Yuan W, Zhu Y.
europepmc   +1 more source

陶瓷薄膜的Sol-Gel法制备

open access: yes, 1999
本文从凝胶制备途径,即无机途径和有机途径角度,阐述了各途径溶胶 ...
王风鸣, 韩铠, 卢旭晨, 李佑楚
core  

Home - About - Disclaimer - Privacy