特征曲线

Taking the nonlinear refraction and the nonlinear absorption into account simultaneously, this paper investigated the diffraction theory model of the Z-scan technique, and analyzed the features of Z-scan curves and their variation rules.

在同时考虑非线性折射和非线性吸收的情况下，借助光的衍射理论，研究了Z-扫描技术的衍射理论模型，分析了非线性折射和非线性吸收同时存在时Z-扫描曲线的形状特征和变化规律。

It was revealed that the average infrared radiation temperature of damp rock increases with loading and keeps its change in step with the stress, and that the fluctuation of AIRI is much less, The AIRT increment of damp rock is higher than that of dry rock under unit load before destabilization and the fact shows that water will intensify the infrared radiation from loaded rock, but no obvious change was found on thermal image during the instantaneous fracture of damp rock.

结果表明：潮湿岩石加载过程中平均红外辐射温度随载荷增加呈上升趋势AIRT与应力的变化步调一致，曲线波动较小；岩石失稳前单位载荷下潮湿岩石的升温幅度高于干燥岩石，水对岩石受力时的红外辐射具有明显推动作用，但破坏瞬间热像特征变化不很明显。

A line-split solution assisted by edge-constrained TIN and a organization method assisted by algebraic characters of winding number are presented for fast construction of vector buffer from buffer curve.

13，提出从缓冲曲线得到缓冲区的边约束三角网辅助切割方法和利用环绕系数的代数特征辅助重组的方法。

The experimental results show the features of L, S, and low amplitude U shape.

实验结果显示了L、S和小幅度U型曲线的特征。

With the help of catastrophe criterion, the anomalism criterions of the crossfeed between dam body and foundation are acquired from the real contact area or fractal dimension curve vs.

并基于突变性判据，利用互馈面实际接触面积或分形维数曲线随名义应变变化的特征，得到了坝体与坝基互馈的转异判据。

MR images was analyzed include tumor shape,margin, internal enhancement characteristics,distribution,and time-signal intensity curves,maximam enhancement ratio,early enhancement ratio and so on.The ADCs of lesions were calculated on ADC maps.Univariate and multivariate analysis of MR imaging data were performed to find the strongest discriminators and the Logestic regression model was established to predict the probabilities for malignancy.

由放射科医生采用双盲法阅片，根据乳腺MR影像报告及数据系统(BI-RADS MRI)，将病变按照不同形态学表现分为肿块和非肿块性病变两组，分析形态学表现(形状、边缘、分布特征、内部增强特征)、血流动力学表现(时间-信号强度曲线类型、最大增强率、达峰时间、早期增强率)，并结合ADC值，应用SPSS15.0软件进行单变量及多变量分析，挖掘有意义恶性征象，建立回归模型，计算其敏感性、特异性、准确性、阳性预测值和阴性预测值。

It is shown that it is difficulty to differentiate each vegetation type among sub-tropical evergreen forest, sub-tropical coniferous forest and sub-tropical deciduous forest because of the mixture of their tree spectra. According to the reflection index in the wavelengths of 750 nm to 1 100 nm, the tree species can be divided into 4 groups with descend in reflectivity. Each tree specie can be differentiated from each other according to its slope of the spectrum curve and its reflection index in the wavelengths of 770 nm to 1 010 nm for each forest vegetation type. The unique first order derivative feature can be used to identify litsea, alder, fir, red birch, southwest birch, large schima confertiflora, taiwania flousian and small leaf schima confertiflora.

研究表明：亚热带常绿阔叶林、亚热带针叶林和亚热带落叶阔叶林等植被类型，因其树种间光谱特征混淆严重，而难以彼此区分；根据其反射率在750~1 100 nm范围上的差异，可将其归为4类；就各植被类型而言，其树种间在光谱曲线坡度，以及在770~1 010 nm范围上具有显著差异，可据此将其区分；木姜子、桤木、杉木、红桦、大叶木荷、秃杉和小叶木荷等因具有独特的光谱一阶导数特征，据此可以识别提取。

The design method to obtain optimal parameters of the F-P interferometric cavity has been concluded in this work.

根据该表达式对响应曲线的特征量进行分析，得到FP干涉仪的参数与这些特征量的关系。

Based on the modeling theory of the equivalent probability density error model(marked as "Tepdem") and the numerical algorithm,this paper provides an approach on how to ascertain a point location with the highest coordinates precision between both of the adjacent characteristic points on a generic curve accurately by use of the theory of function extremum as well as the iterative algorithm,and it also provides the method on how to obtain the least width of "Tepdem" exactly,from which,the explanation of geom...

基于等概率密度误差模型建模原理和数值算法，运用函数极值理论和迭代方法来求解平面一般曲线上两相邻特征点间位置精度最高的点，以精确确定误差模型的最小带宽，从理论上给出等概率密度误差模型的几何特征，从而进一步完善矢量GIS的位置不确定性理论。通过实例计算与可视化分析，验证了理论推导的正确性。

Through analyzing the heavy mineral combination and its distribution characters in Malang Area of Santanghu Basin, the source direction of deposits were judged in Malang Area by using the type of the mineral combination, its percentage content and curve of stability coefficient, in combination with the percentage distribution of quarts sandstones in each stratum.

通过对三塘湖盆地马朗地区重矿物组合及分布特征的分析，利用重矿物组合类型、百分含量及重矿物稳定系数的曲线特征，结合各层系的石英砂岩百分含量分布，判断了马朗地区的沉积物源方向。

I will endeavour to find you some assistance.

我尽力帮你找人帮忙。

At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.

起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像，后来回台湾，甚至去年在北京，居然也四处看见她的海报，才惊讶她的魅力之大。