Plastics piping systems with structured wall pipes for soil and waste discharge low and high temperature inside buildings . unplasticized poly vinyl chloride . guidance for the assessment of conformity 建筑物内的粪水和废物排放用的带结构壁管道的塑料管道系统低温和高温.非增塑聚氯乙烯.一致性评价指南
A one - - dimensional photonic crysta1 ( l - - d pc ) model is developed and used to calculate the energy band structures of 1 - - d pc and 1 - - d pc su - per1attice ( sl ) based on fdtd method 采用该方法研究了一维光子晶体及一维光子晶体超晶格的能带结构。计算了一维光子晶体及一维光子晶体超晶格的透射（反射）谱。
Experimentally , an interesting six - route ndr characteristic , resulting from the form of split miniband structures and the extension of high - field domain in the superlattice , is observed at room temperature 实验的结果显示，由于此分?迷你带结构及超晶格结构中高场区域的扩展，于常温下可观察出?道轨迹之多重负微分电阻特性。
This method has been applied to analyze electromagnetic scattering from random rough surface , two - dimensional random dielectric cylinders , microstrip structures and densely packed interconnects 目前这种方法已被应用于随机粗糙面散射问题的分析、随机分布的二维介质柱的散射分析、微带结构的分析、密集封装的互联分析等问题中。
There is also energy band structure for photons in photonic crystal , which is similar as that for electrons in natural crystal ( electronic crysta1 ) . localized state will ap - pear if there is an impurity or defect 光子晶体中的光子与一般晶体（电子晶体）中的电子相似，都有能带结构，都会因为有杂质和缺陷态的存在而存在局域态。
In experiments , the energy band structures of l - - d pc and 1 - - d pc sl are researched . we get the relation between the band gap width and the num - ber of the iayers , dielectric indices contrast , midgap wave - - length 在实验工作中，研究了一维光子晶体的能带结构，得到了带隙宽度随介质层数、介质折射率、中心波长变化的关系曲线。
Three types of artificial neural networks , namely radial basis function network , feedforward network , stochastic network , and their application in the analysis of electromagnetic stop band structure in coplanar waveguide have been discussed 本文研究了以下三种人工神经网络：径向基函数网络、前向网络、随机网络，并用于分析共面波导中的电磁阻带结构。
A revised plane - wave expansion method for quickly calculating the band structure of a photonic crystal of pixel type is used to design a photonic crystal of square lattice with a large absolute band gap at high frequencies 本文用修正后的平面波方法，数值分析了由常见的半导体材料gaas ( = 11 . 4 )和空气为介质组成的二维光子晶体的能带结构，发现了一些有意义的结果。
Tio2 film is antibacterial through photocatalysis . the silver doped tio2 film baffle the separate of electron and cavity , change the energy gap ' s framework of tio2 , and improve its activity performance of photocatalysis 二氧化钛薄膜是光催化抗菌，掺银二浙江人学帧卜论义氧化钛薄膜阻止光生电子一光生空穴的分离，改变了tioz的能带结构，提高了它的光催化活性。
This key characteristic makes it possible to enhance the photoconductivity properties , and to adjust the spectral response range of devices made by mpc , which leads a bright future for application of phthalocyanines in opto - electronic field 酞菁金属配合物的突出特点之一是其能带结构易于剪裁，可通过不同方法加以改变，从而达到改善器件光电导性能，调整光谱响应范围等目的。
