用光电法测量刚体的转动惯量──对波纹法测量刚体转动惯量的改进

用Ｊ─ＬＤ２转动惯量测试仪的波纹法测试转动惯量的实验方法，测量精度差，操作不方便．利用实验室现有的仪器改进成光电法测试转动惯量的方法，简单易行，测量精度高，操作方使，实践效果良好．     

用电位差计测电流表内阻

本文提出几种利用电位差计测电流表内阻的方法和计算不确定度的公式，引做了实验验证和综合评述。     

等值电流法测电阻

本文提出了伏安法测电阻的新接法——等值电流伏安法。消除了电表内阻影响，简化了线路，得到满意的实验结果．     

Growth and equilibrium morphology of metal precipitates formed inside an oxide matrix

Metal precipitation occuring during internal reduction of various mixed oxides, such as magnesia or alumina, doped with more noble transition metal oxides, is investigated for different doping contents, reaction temperature and driving forces. The precipitate morphology developing inside the solid oxide matrix and the corresponding orientation relationships between the metal and the oxide phase are analysed by transmission electron microscopy. The evolution of precipitate shape across the reduction scale is interpreted in terms of ageing of the metal inclusions; the various morphologies identified are ascribed to different stages of nucleation, diffusional growth and final equilibration.Precipitate morphology is analysed in terms of diffusion-controlled growth of small metal particles in their local and long range diffusion field. The influence of interfacial energy and related anisotropy is experimentally demonstrated for selected examples. The general role played by these parameters during growth and final equilibration is also discussed. The implications of the elastic strain fields building up during growth of the metal inside the oxide matrix are analysed in view of our experimental results. Shape changes taking place during the growth process are considered to be controlled by local matter transport properties. The influence of the reaction mechanism at an atomic scale and the relative fit of the crystallographic lattices are briefly summarised.     

矩阵方程AX=B的转动不变解及其最佳逼近

利用矩阵的广义逆、奇异值分解、张量积和拉直算子,给出了矩阵方程AX=B有转动不变解的充分必要条件及有解时通解的表达式;给出了矩阵方程解集合中与给定矩阵的最佳逼近解的表达式.     

在伽利略坐标变换下的二端面弹性转轴相似动力学方程

在非相对论性原理下建立了二端面弹性转轴的相似动力学方程.使弹性转轴的动力学方程与地面坐标下的动力学方程相似,为相似工程学和计量、测控仪器的相似标定提供理论依据及方法 关键词： 二端面弹性转轴 相似模拟 坐标变换 相似动力学方程 标定     

光电式电流互感器法拉弟旋光的线性双折射误差估计

提出一种估计法拉弟族光线性双折射误差的近似公式，它可对双折射误差进行数值补偿，从而使测量精度得以提高．     

分子结构振动固有频率与链烷烃热力学性质的定量关系

用分子结构固有频率和分子中的甲基数作为分子结构信息指数,建立链烷烃分子结构与热力学性质的双参数QSPR模型.该模型用于18种链烷烃分子的标准生成焓、标准熵和标准生成自由能实验值的回归分析,得到相关程度大于0.999的标准生成焓、标准熵回归方程和相关程度大于0.99的标准生成自由能回归方程.所得方程用于67种链烷烃的标准生成焓、标准熵和标准生成自由能预测,结果与实验值的相关程度均大于0.9950.     

改进型非对称Y分叉内全反射光开关特性分析

提出一种改进型非对称Y分叉内全反射光开关,较详细地分析了结构参量对光开关消光比和损耗的影响,优化设计后开关的消光比可大幅度提高,并给出了一种优化设计的方案.     

Reinvestigation of the ground and first torsional state of methylformate

We have reinvestigated the laboratory spectrum for the methylformate HCOOCH₃ molecule involving both the ground and first excited torsional states.We have fitted within almost experimental accuracy a data set for this molecule consisting of 3496 v_t=0 and 774 v_t=1 microwave lines, using the so-called “rho axis method” (RAM) and a model extended to include perturbation terms through eighth order. The previously published microwave lines covering the J values up to 43 in the ground state and up to 18 in the first excited state have been extended by 434 new measurements from Lille in the 567–669 GHz spectral range, corresponding to transitions with J_max=62, K_max=22 in v_t=0. The final fit requires only 49 parameters to achieve a unitless weighted standard deviation of 1.43 for a total of 4270 lines for the whole fit. This result represents an improvement over the previous fit which achieved a standard deviation of 1.96 for 3862 lines using 69 parameters. A calculation of the line strengths of torsion–rotation transitions up to J = 60 needed for the astronomical survey is also provided.