密度测量

Taking the gradient property of piezoelectric parameters g-(31),elastic compliance parameters S-(33) and density ρ along z direction into account,some parameter identification methods for a functionally gradient piezoelectric material are studied in the present analysis.

当考虑压电材料的压电参数g31，弹性参数S33和材料密度ρ沿厚度呈梯度变化时，通过测量压电材料悬臂梁在电场或横向集中力作用下梁的宏观反映，给出了确定这些参数分布的公式，包括g31、S33的单参数识别及体积力与联合参数识别的方法。

The experiment results indicate that the recycle of the edge plasma reduce and the level of impurity descent in the main vacuum chamber under the divertor running model.

偏滤器靶板上的平面型静电探针阵列用于测量同一极向截面的内外和上下四个中性化板上的电子温度，密度，悬浮电位及其分布。

The fixed flush 3-probe arrays, mounted on the 4 divertor neutralization plates at the same toroidal cross-section in divertor chamber, are used to measure the profiles of the electron temperature, density and float potential.

用偏滤器靶板上的14组嵌入式静电3探针阵列测量了同一环向截面的内外中性化板上的电子温度、密度、悬浮电位及其分布。

Under the divertor configuration running model in HL-2A, the Z-axis direction profiles of the electron temperature, plasma density, floating potential and net current of the grounded probe has been measurements at inner and outer divertor target plate of same poloidal section using the purpose-built array of flush-mounted Langmuir probes.

HL-2A装置边缘等离子体诊断是通过磁力传动的马赫/雷诺协强/朗缪尔10探针组进行研究。10探针组是安装在可径向向里和向外移动，并可绕轴旋转3600的传动杆上，用于测量主等离子体边缘的温度，密度，悬浮电位，空间电位，径向和极向电场，雷诺协强，径向和极向等离子体流速及其径向分布。

The morphology, component and structure of electrolytically etched surface are characterized and the mechanism of electrolytic etching and graining is also discussed based on the theoretical analysis. The components that can form barrier layer or dissolve the resisting layer on the surface of Al-Mg-Si alloy specimens are investigated through voltamperometric and chronoamperometric analysis in several solutions.

通过对Al-Mg-Si合金在各种溶液中的电流密度—电位曲线及电位—时间曲线的测量与分析，筛选出能够在Al-Mg-Si合金表面形成阻挡层的成分和对阻挡层有刻蚀作用的成分，并进行复配实验对比，优选出偏硼酸钠-硼酸、酒石酸-碳酸钠、磷酸钠-正丁酸和柠檬酸钠-柠檬酸等4种图纹电解刻蚀液体系。

The average optical density that benefit measures organization of different period hemangioma and normal skin to organize Cyclin G1 and P53 expression with technology of computer image analysis and average and electropositive area.

利用计算机图像分析技术测量不同时期血管瘤组织和正常皮肤组织Cyclin G1和p53表达的平均光密度和平均阳性面积。

A novel data readout method based on equivalent capacitance detection is developed for SPM-based high density data storage.

通过测量压电悬臂梁的等效电容来检测悬臂梁的振动信息，以应用于基于扫描探针技术的高密度信息存储中进行数据读取。

Methods S.mutans were incubated respectively in 0.5%, 1%, 2%, 4%, 8%,12%, 16% erythritol or xylitol culture medium under anaerobic conditions. The A and pH value of the mediums were measured at 0, 2, 4, 6, 8, 10, 12, 18, 24 hours, following the profile plots by SPSS.

分别用含0.5%、1%、2%、4%、8%、12%、16%赤藓糖醇和木糖醇的TPY培养基在厌氧条件下培养变异链球菌，分别于0、2、4、6、8、10、12、18、24 h测量液体培养基的光密度值和pH值，运用SPSS描绘其变化曲线图。

To enhance the qualitative measurement for regional sustainable development has an explicit function of facilitating the environmental construction of the ecosystem.

加强对区域可持续发展水平的定量测度，对促进生态环境建设起着明显的推动作用。为此，用"和度"与"合度"作为区域可持续发展水平的测度指标，测量了1992、1995、2000年全国各省市区生态资产的总量及单位面积上的生态资产密度，并据此分析了各省市区国内生产总值变化与其生态资产间的关系。

By Faradic impedance technique,a significant increase of the interracial electronic transfer resist- ance R_ was determined when the SH-ssDNA probe/Au electrode hybridized with its comple- mentary sequence.

实验中对DNA探针的自组装时间、杂交温度、杂交时间和阻抗测量液等实验条件进行了观察和优化；通过选择自组装液中SH-ssDNA探针和RSH的浓度，减少DNA在金电极表面的非特异性吸附，同时保证金电极表面自组装的SH-ssDNA探针有合适的疏密度，提高了杂交效率。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。