管

The name is "Shanghai Yuezhen Industrlle CO.,LTD." Now we have two boards, but a leading body manege. It is an entorpris of producing plastic products. It is expert in which produce all kind of PVC-U Cavity wall Corugated pipe, Ridded pipe, PE pipe protocting fibre optise Cable and pipe fiting. The products have been maily used in constructtion projects of telecommuniction line, power transmission and municipal engineering. Such as, Shanghai the Bund project, New Railway station, North-South Skgway, Shanghai inside and outside highway traffic looplline, Nanpu Bridge, Pudong International Airport, Songjiang University urban area, etc. As well as our prodcts ave slid well to mang prainces in Zhejiang, JiangSu, Anhui, Henan, Jiangxi and GuangXi.

企业专业生产PVC-U双壁管波纹管、PVC-U加筋管、PE光缆护套管的工业企业，产品主要用于邮电通信、电力、市政工程建设项目上，上海外滩一期、二期、新客站、内外环线、高北高架、南浦大桥、杨高路远东大道、浦东国际机场、松江大学城等重大工程建设项目都广泛使用我厂的产品，产品也遍布浙江、江苏、安徽、河南、江西、广西等省市。

The paper firstly examined the mechanical characteristics of wood samples at micron scale, which provided some theoretical basis for the application of wood microtome section to study the in-tree variation of longitudinal mechanical properties of tracheids. In chapter 3, microtension of wood microtome section is for the first time used to explore the in-tree variation of longitudinal MOE of tracheids, meanwhile the size effect of mechanical properties of wood at micron scale is taken into count.

本项研究正是基于以上考虑而提出的，首要目标是提出能快速评价管胞纵向力学性质的实验技术，并以此研究了人工林杉木管胞纵向力学性能的株内变异规律；目的之二是从实验和理论的角度研究管胞细胞壁力学性质的主要影响因素，为树木木材品质的基因改良提供量化的目标和指标。

In chapter 5, the concept of zero-span tension known in papermaking area is for the first time introduce to wood science area to explore in-tree variation of longitudinal tensile strength of tracheids and its main influencing factors. In chapter 6, composite micromechanics and classic laminated theory are used to make a comprehensive and detailed analysis of the main influencing factors of mechanical properties of tracheids cell wall. Some experimental results acquired in the foregoing chapters are explained successfully. Results were summarized as follows: Mechanical characteristics of wood at micron scale: 1 At micron scale, the longitudinal mechanicai behavior of wood microtome section differs greatly from that of wood with normal size.

论文的第2章首先研究了微米尺度下木材的力学特性，为后面运用木材微切片拉伸技术奠定一定的理论基础；在第3章，首次考虑到了微米尺度下木材力学性质的尺寸效应，并运用木材微切片正常间距拉伸技术研究了管胞纵向弹性模量的株内变异规律；在第4章，首次利用纳米压痕技术中最新发展起来的连续刚度测量法直接在管胞细胞壁上进行纳米级的压痕实验，测量次生壁S〓层的纵横向弹性模量和硬度，从而把细胞壁力学的研究提高到一个更高的水平；在第5章，首次把造纸领域的零距拉伸技术引入木材科学研究领域，研究了管胞纵向抗拉强度的株内变异规律及其主要影响因素；第6章则运用复合材料细观力学的基本理论和经典层板理论对影响细胞壁力学性能的主要因素进行了全面而系统的分析，并为前几章的一些实验结果提供理论上的解释。

Methods Retrospective analysis of 120 cases with multi-slice abdominal CT scanning were randomly and equally divided into experimental group and control groups, which group was 60 cases, respectively using automatic tube current modulation techniques and constant tube current in abdominal CT examination, the statistics were weighted CT dose index, dose-length product and effective milliampere seconds to compare image noise characteristics and the details show results.

回顾性分析我院腹部多层螺旋CT检查120例，随机分为实验组与对照组各60例，分别采用自动管电流调制技术和固定管电流技术进行腹部CT检查，分别统计CT剂量权重指数、剂量长度乘积及有效管电量，并对图像噪声特性、细节显示结果进行比较。

Also, we can find that the diameter of carbon nanotubes affects the structure of Na nanowire obviously. In the carbon nanotube (4,4), the Na nanowire is monatomic linear strcture, while it is of helicity and larger diameter.

且碳纳米管的直径对纳米线的直径及结构有明显的影响，碳纳米管(4，4)中得到的纳米线为单原子排列的直线结构，而碳纳米管(6，6)中得到的纳米线则为直径较大的、带有一定螺旋性的线性结构。

After removing the catalyzer by dense muriatic acid, carbon nanotubes are reacted with mix acid (vitriol:nitric acid=3:1 vol./vol.). By comparing the surface image of gained carbon nanotubes under the different condition, the best mix acid oxidation temperature is fixed on 140°C and the reaction time is 30min. The soluble carbon nanotubes were prepared by decorating of octadecylamine on the surface of nanotubes. Three processes of grafting were investigated in this research.

对碳纳米管的热失重、差热分析结果表明，通过在一定温度下空气氧化可去除大部分碳颗粒；而浓盐酸浸泡可去除碳纳米管制备过程中残留的催化剂颗粒；对在不同条件下与硫酸和硝酸配制的混酸反应处理后得到的碳纳米管的表面形貌研究表明最佳混酸氧化条件为140℃氧化30min。

When an unanticipated intubation by direct laryngoscope was recognized, the GlideScope was used for the following tracheal intubation orally or nasally.

当以传统喉头镜插管发生未预期性困难插管时，GlideScope被使用来当成替代性插管工具，不管是经由口腔或是经由鼻腔。

The result indicates that the number of piriform gland spigot and aciniform gland spigot, with or without nubbin and cylindrical gland spigot, the number of cylindrical gland spigots, etc.

结果表明，圆颚蛛科和光盔蛛科的纺管类型一致；二者与管巢蛛科的纺管区别较大。

This paper designs the dynamic displaying IP core of the8-segment numeric LED based on FPGA,and intro-duces the internal structure of8-segment numeric LED and its driver display and IP core design method,gives the Verilog HDL source code and C language driver program of the8-segment numeric dynamic displaying IP core.

设计基于FPGA的8段数码管动态显示IP核，介绍8段数码管内部结构及其驱动显示方式和IP核设计方法，给出8段数码管动态显示IP核的Verilog HDL程序源代码及其C语言驱动程序。

Objective To explore the nursing methods during canal obturation in order to improve efficiency and quality of root canal therapy.

目的探讨根管治疗术中根管充填的护理方法，以提高根管治疗的效率和质量。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。