Results 41 to 50 of about 476 (100)
[Evaluation of methods for fitness of removable partial denture]. [PDF]
Beijing Da Xue Xue Bao Yi Xue Ban, 2021 Yoon JM +6 more
europepmc +1 more source
Simultaneous implantation and tooth preparation technology guided by 3D-printed guide. [PDF]
Hua Xi Kou Qiang Yi Xue Za Zhi, 2023 Hu N +6 more
europepmc +1 more source
Dianci bileiqi, 1999 在绝缘子表面涂覆一层憎水涂料，可显著提高绝缘子的耐污闪能力，实践证明这是防止污闪事故的一项有效措施。室温硫化硅橡胶涂料是一种新型防污、憎水、长效涂料，与常用涂料相比，室温硫化硅橡胶涂料具有涂覆简单、维护方便、寿命长的特点，目前已在我国许多地方投入使用。为了更好地了解室温硫化硅橡胶涂料的耐污闪能力，本文借助高速摄相机，拍摄了沿室温硫化硅橡胶表面和瓷表面污闪放电的全过程。通过照片，可以看出沿室温硫化硅橡胶涂料表面的污闪过程明显不同于沿瓷表面的污闪过程，借助记录波形并结合理论分析 ...
贾志东, 谢恒, 关志成
doaj
[Embedded 3D printing of porous silicon orbital implants and its surface modification]. [PDF]
Nan Fang Yi Ke Da Xue Xue Bao, 2023 Zhao H +7 more
europepmc +1 more source
Clinical performance of intraoral digital impression for fixed prosthodontics: a Meta-analysis. [PDF]
Hua Xi Kou Qiang Yi Xue Za Zhi, 2021 Chen L, Chen C, Li ZY, Zhang Q.
europepmc +1 more source
[Determination of short- and medium-chain chlorinated paraffins in different components of human blood using gas chromatography-electron capture negative ion-low resolution mass spectrometry]. [PDF]
Se Pu, 2023 Yu S +6 more
europepmc +1 more source
Gaoya dianqi, 2009 硅橡胶由于其独特的化学键和结构,具有耐高、低温性,憎水性,憎水迁移性,憎水恢复性,耐漏电起痕性和抗电蚀损性,电绝缘性等诸多优异性能,在高压线路中已得到应用。系统地论述了用于高电压硅橡胶绝缘子材料所应具备的性质、作用机理,及其在高电压中的应用。今年的雪灾使南方大部分高压输电线路出现覆冰和断电等严重事故,对国民经济造成了重大损失,其部分原因是由于在低温的气候条件下硅橡胶的耐寒性和憎水性尚存不足所致,为了使硅橡胶绝缘子材料在高压输电线路上更广泛应用,改善和提高硅橡胶的耐寒性和憎水性是摆在业界面前的重大课题 ...
邵俊, 赵耀明, 杨崇岭
doaj