排序方式: 共有68条查询结果,搜索用时 250 毫秒
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Corus Bausysteme的新KalzipFP立面系统为个性设计创造了广阔的空间.并且使每座建筑都具有自己独一无二的特色。它既适用于建筑的翻新.也适用于新建筑的修建。类似于Kalzip屋顶系统.不同的表面处理(天然的灰泥浮雕、铝加锌、铝加铜)以及各种颜色(有颜色的表面涂层、PVDF或聚酯涂层)都可以采用这种后置通风的立面系统。也可以采用抗涂鸦涂层.它可以保证在不破坏原有覆层的前提下.完全去除损毁的部分。长跨度闸盒的覆盖宽度为250mm、300mm、333mm、500mm和600mm.用一个隐形的弹夹系统就可以将它们安装在有凹口的窗棂上.而不需采用铆钉和螺丝。 相似文献
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Ultralight X-type lattice sandwich structure (I): Concept,fabrication and experimental characterization 总被引:1,自引:1,他引:0
ZHANG QianCheng HAN YunJie CHEN ChangQing & LU TianJian State Key Laboratory for Mechanical Behavior of Materials School of Material Science Engineering Xi’an Jiaotong University Xi’an China MOE Key Laboratory for Strength Vibration School of Aerospace Department of Engineering Mechanics AML Tsinghua University Beijing 《中国科学E辑(英文版)》2009,52(8):2147-2154
A new type of ultra-lightweight metallic lattice structure (named as the X-type structure) is reported. This periodic structure
was formed by two groups of staggered struts in the traditional pyramid structure, and fabricated by folding expanded metal
sheet along rows of offset nodes and then brazing the folded structure (as the core) with top and bottom facesheets to form
sandwich panels. The out-of-plane compressive and shear properties of the X-type lattice sandwich structure were investigated
experimentally and compared to those of the sandwich having a pyramidal truss core. It is found that the formation of the
2-dimensional staggered nodes can effectively make the X-type structure more resistant to inelastic and plastic buckling under
both compression and shear loading than the pyramidal lattice truss. Obtained results show that the compressive and shear
peak strengths of the X-type lattice structure are about 30% higher than those of the pyramidal lattice truss having the same
relative density.
Supported by the National Basic Research Program of China (“973” Project) (Grant No. 2006CB601202), the National Natural Science
Foundation of China (Grant Nos. 10632060,10825210), the National “111” Project of China (Grant No. B06024) and the National
High-Tech Research and Development Program of China (“863” Project) (Grant No. 2006AA03Z519) 相似文献
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多层印制电路板抗快速瞬变脉冲群干扰的电磁兼容性设计 总被引:1,自引:0,他引:1
在电力系统继电保护设备中,因为出现系统故障时产生的各种电磁干扰信号既大又复杂,要保证保护设备的正确动作,电磁兼容性设计.特别是控制快速瞬变脉冲群干扰信号对保护设备影响的设计显得非常重要。本文重点讨论控制瞬态干扰的方法、多层电路板布线规则、去耦与旁路、接地技术等。 相似文献
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AU ChakTong 《中国科学:信息科学(英文版)》2010,(2)
Ni-doped ZnO thin films (Ni concentration up to 10 mol%) were generated on Si (100) substrates by a sol-gel technique. The films showed wurtzite structure and no other phase was found. The chemical state of Ni was found to be bivalent by X-ray photoelectron spectroscopy. The results of magnetic measurements at room temperature indicated that the films were ferromagnetic, and magnetic moment decreased with rise of Ni concentration. The magnetization of Ni (10 mol%)-doped ZnO film annealed in nitrogen was low... 相似文献
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