浅说国际性学术会议英文文件的写作

叙述国际性学术会议的英文文件的写作形式和基本方法。     

浅谈科技英语的特点及其译法

科技英语与普通英语的不同点主要是,科技英语更多地是用来叙述普遍真理,描述特性、功能或过程及交代推理或假设等。因此它具有自己独特的语言结构特点。本文仅就笔者10年来的翻译工作实践,谈谈自己的一些看法和体会。     

Improvement of quantitative analysis of molybdenum element using PLS-based approaches for laser-induced breakdown spectroscopy in various pressure environments

An experimental setup has been designed and realized in order to optimize the characteristics of laser-induced breakdown spectroscopy system working in various pressure environments. An approach combined the normalization methods with the partial least squares(PLS) method are developed for quantitative analysis of molybdenum(Mo) element in the multi-component alloy,which is the first wall material in the Experimental Advanced Superconducting Tokamak. In this study, the different spectral normalization methods(total spectral area normalization,background normalization, and reference line normalization) are investigated for reducing the uncertainty and improving the accuracy of spectral measurement. The results indicates that the approach of PLS based on inter-element interference is significantly better than the conventional PLS methods as well as the univariate linear methods in the various pressure for molybdenum element analysis.     

Influence of a Static Magnetic Field on Laser Induced Tungsten Plasma in Air

In this work,laser induced tungsten plasma has been investigated in the absence and presence of 0.6 T static transverse magnetic field at atmospheric pressure in air.The spectroscopic characterization of laser induced tungsten plasma was experimentally studied using space-resolved emission spectroscopy.The atomic emission lines of tungsten showed a significant enhancement in the presence of a magnetic field,while the ionic emission lines of tungsten presented little change.Temporal variation of the optical emission lines of tungsten indicated that the atomic emission time in the presence of a magnetic field was longer than that in the absence of a magnetic field,while no significant changes occurred for the ionic emission time.The spatial resolution of optical emission lines of tungsten demonstrated that the spatial distribution of atoms and ions were separated.The influence of a magnetic field on the spatial distribution of atoms was remarkable,whereas the spatial distribution of ions was little influenced by the magnetic field.The different behaviors between ions and atoms with and without magnetic field in air were related to the various atomic processes especially the electrons and ions recombination process during the plasma expansion and cooling process.     

科技英文汉译的点滴体会

随着社会的发展,各项技术越来越向精专方向发展。据有关资料介绍,目前世界上已有3000多种专项待业技术。仅以笔者所在企业,其技术专业也多达百种之多。所以,即使作为一位高级专业技术人员,也无法精通甚至是了解所有的专业知识。这也就越发     

基于Inventor API的自动切分工具开发

为满足水利水电工程建设中BIM应用从设计到施工阶段的顺利过渡,实现水工建筑物设计模型到施工模型转化过程的自动化和批量化,开发了基于Inventor软件的零件实体自动切分工具。开发基于Inventor软件的API接口,利用外部编译软件,使用.net语言完成功能代码编写,最终以Add-in的插件形式植入Inventor软件的零件模式。该工具包含文件修改、实体定位、自动切分、自动导出、自动编码等功能,基本实现了线状建筑物的快速切分,为BIM模型的阶段性过渡提供便利。     

HPER的制备及在NR中的应用研究

首先对季戊四醇(PER)进行超支化有机改性,然后采用磷酸封端,制得磷系阻燃剂——超支化季戊四醇(HPER).采用共混法制备了天然橡胶(NR)/HPER复合材料,研究了其阻燃和物理机械性能.结果表明,与未添加阻燃剂的NR相比,NR/HPER复合材料的水平燃烧时间得到延长,同时其硬度降低,拉伸强度与断裂伸长率有着不同程度的提高.     

Diagnostics of First Wall Materials in Device by Polarization-Resolved a Magnetically Confined Fusion Laser-Induced Breakdown Spectroscopy

Laser-induced breakdown spectroscopy （LIBS） is a powerful analytical tool for real- time diagnostics and detection of multiple elements deposited at the first wall of magnetically confined plasma ft~sion devices. Recently, we have tested LIBS in our laboratory for application to in situ real-time diagnostics in the fusion device EAST. In this study, we applied polarization- resolved LIBS （PR-LIBS） to reduce the background continuum and enhance the resolution and sensitivity of LIBS. We used aluminium （A1） （as a substitute for Be） and the first wall materials tungsten （W） and molybdenum （Mo） to investigate polarized continuum emission and signal-to- background ratio （SBR）. A Nd：YAG laser with first, second and third harmonics was used to produce plasma. The effects of the laser polarization plane, environmental pressure and polarizer detection angle were investigated. The spectra obtained without using a polarizer （i.e. LIBS） were compared with those obtained with a polarizer （PR-LIBS）. Distribution of emission spectral intensity was observed to follow Malus＇ law with respect to variation in the angle of detection of the polarizer. The spectra obtained by PR-LIBS had a higher SBR and greater stability than those obtained by LIBS, thereby enhancing the reliability of LIBS for quantitative analyses. A comparison of A1, Mo and W showed that W exhibited a higher continuum with stronger polarization than the low-Z elements.     

太赫兹光谱诊断等离子体电子密度实验及模拟

近年来，太赫兹时域光谱技术(THz-TDS)被用于多种等离子体源的电子密度诊断研究中，但其可靠性程度评估工作开展较少，亟需补齐相应研究。本文将THz-TDS用于诊断电感耦合等离子体源(ICP)的电子密度，ICP驱动频率为13.56 MHz，功率为250~400 W，工作介质为氩气，气压为30~99 Pa。诊断结果显示电子密度随输入功率和气压单调递增，电子密度范围为10¹³~10¹⁴ cm^-3。同时，利用COMSOL Multiphysics构建漂移扩散模型对该条件下等离子体电子密度进行数值计算研究。结果显示：实验测量与数值计算的电子密度值定量吻合较好，且两者随气压变化趋势一致。证实了THz-TDS应用到等离子体诊断领域中具有可靠性高、稳定性好等优异特性，具有非常广阔的发展潜力。