Results 31 to 37 of about 37 (37)
Dianci bileiqi, 2010 专利申请号:CN200620023586.4公开号:CN2884215申请人:大同柏盛铁路科技有限公司本实用新型涉及一种电力机车车顶高压供电绝缘子在线绝缘检测装置,它没有PS电源,S1、S2……Sn绝缘状态检测器与SD波形整型器连接,SD波形整型器与MCU单片机连接 ...
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Dianci bileiqi, 1979 电瓷坯子,通常放在架子上进出烘房.为了便于运送,可以在架子底下装轮子,在地上滚动;也可以在架子顶部装轮子,在天轨上滚动.如果每个架子需装2～4个轮子,那么许多架子就要很多的轮子.轮子在烘房里要经受高温和高湿,这就产生了投资多和维修忙的缺点.西安高压电瓷厂棒形绝缘子烘坯架没有轮子,而用电瓶车或承架车使架子移动.使用承架车时,把车子推到架子下,升起上框架,使坯架托起,腿离地,推(拉 ...
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Dianci bileiqi动车组车顶电缆敷设过程中的弯折可能会在其内部界面间形成微小气隙，畸变其附近局部电场，当动车组列车在运行期间过分相时，其过分相过电压也会进一步提高车顶电缆附近的电场强度，致使车顶电缆及其周围绝缘介质受损，进而使气隙尺寸扩大形成气隙贯穿，严重时将导致电缆被击穿。本文通过电缆弯曲应力公式和梁结构公式确定了气隙易发生的位置。根据电缆实物建立了电缆模型，根据电缆气隙易发位置建立厚度、长度和跨度三种参数变量的电缆内部气隙三维模型。探究了列车正常运行工况下和单次陡波冲击过电压激励下电缆气隙缺陷对其电场强度的影响 ...
张淑窈 +5 more
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[Short-term effectiveness of expert adolescent lateral femoral nail fixation for femoral shaft fractures in older children and adolescents]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiHe X +6 more
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[Management of accidental tooth root displacement into the mandibular canal during tooth extraction]. [PDF]
Hua Xi Kou Qiang Yi Xue Za ZhiSu L, Zhao J.
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[Clinical efficacy of in-situ crown reattachment technique combined with pulpotomy in the treatment of complica-ted crown-root fractures of young permanent anterior teeth]. [PDF]
Hua Xi Kou Qiang Yi Xue Za ZhiSu X, Guo Q, Ren M, Liu F.
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[Clinical analysis of 12 cases of solitary fibrous tumors in nasal cavity, sinuses and skull base]. [PDF]
Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za ZhiQi Z +7 more
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