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The aging process of 18Ni maraging steel have been studied by means of small angle X-ray scattering,Mossbauer spectroscopy and TEM.

尹钟大，李晓东，李海滨，来忠红摘要：采用小角X射线散射、Mossbauer谱、透射电镜方法研究了18Ni马氏体时效钢的时效过程。

ABSTRACT The aging processes of 18Ni maraging steel have been systematically studied by means of transmission electron microscopy, small angle X—ray scattering, M〓ssbauer spectroscopy and atom probe technique.

本文利用透射电镜，小角X射线散射，穆斯堡尔谱和原子探针对18Ni马氏体时效钢的时效过程进行了较为系统的研究。

The structure of activated carbon prepared from city solid wastes under different conditions was investigated by synchrotron radiation small angle x ray scattering .

应用同步辐射小角x射线散射方法研究了由不同城市固体垃圾制备而成的活性炭的孔结构。

The manipulation of Hv and Vv in Small Angle Laser Scattering experiments gives the parameters of correlation distance to characterize crystalline dimension and phase dimension as well as average chord lengths and particle diameters. All the results of Vv by SALS were compared with that of PCM and SEM.

对共混体系进行了小角激光光散射的HV和VV散射研究，计算了表征结晶尺度的相关距离、表征相尺寸的相关距离、平均弦长和相颗粒的平均直径，并与PCM和SEM的计算结果进行了比较。

In order to overcome the difficulties faced on analytically deriving the equation for describing the samll angle light scattering patterns from anisotropic objects with arbitrarily director configurations, a Fast Fourior Transformation algorithm for the calculation of SALS patterns from the anisotropic objects immersed in an isotropic matrix has been developed.

用快速傅里叶变换计算方法( Fast Fourier Transformation，FFT)直接获得高分子材料中介观有序结构小角激光光散射图案，从而对实验获得的球晶和液晶液滴的 SALS图案进行结构预测。

For unexploded ordnances, the four dimensional unexploded ordnance scattering function of slant range, azimuth, frequency and aspect angle is firstly estimated via the SWD. Secondly, the amplitude information of the multi-aspect feature in different frequencies is extracted, and the spatial distribution information of multi-aspect feature in different frequencies is quantitative described using the Hu moment invariants further.

对于未爆物目标，首先利用SWD得到未爆物斜距-方位-频率-方位角四维散射函数估计，然后在提取了不同频率下的多方位特征幅度信息的基础上，利用Hu不变矩进一步定量描述未爆物不同频率下的多方位特征空间分布信息。

The accuracy of gel permeation chromatography is very important since it was used to determine the molecular weight distribution of polymer and to set up the relationship between polymer structure and properties. In this thesis, the instrumental spreading of a high temperature GPC was evaluated by coupling with a two-angle laser light scattering detector.

凝胶色谱作为测定聚合物分子量和分子量分布，GPC与光散射检测器联用作为表征聚合物的绝对分子量、分子尺寸及支化结构，建立聚合物材料结构与性能之间关系的研究手段，其本身的准确性十分重要。

Transmitted electrons were finally detected by a channeltron electron multiplier operating in single-pulse mode instead of usual measuring current intensity, which can reduce the acceptance solid angle and the contribution of elastic scattering in the forward direction can be minimized effectively.

因采用了恒温控制作用室，以便较准确测量反应室的绝对气压值；同时采用静电型圆柱能量分析器，并用计数率测量模式代替通常的束流强度测量模式，从而可以大幅度减小接收立体角，抑制零度角的弹性散射贡献。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。