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After 25% deformation at 850℃, and relaxation for 6 to 30 seconds, a great deal of fine Nb particles precipitates in steels, the size of particles is less than 10nm. With the increase of relaxation time, the amount of precipitates starts to decreases, the size coarsen to greater than 10nm.

在850℃变形后随驰豫时间的延长，在6～30秒内有大量细小的Nb粒子应变诱导析出，其尺寸小于10nm，驰豫时间再进一步延长，析出数量开始减少，粒子的尺寸粗化为10nm以上。

The dielectric relaxation is non-Debye dielectric relaxation when slow polarization effect cannot be neglected in the samples. And from low frequency to radio frequency, the complex ε of the samples is not consistent with Kramers-Kroning relation.

实验表明：介质中慢极化效应的存在使得其介电弛豫普遍都不是德拜型的；在超低频至射频的广阔频段，样品的复ε不满足Kramers-Kroning关系。

Using the probability relaxation model,we obtainedthat the diffusion constant and the relaxation time have the same temperaturedependence,denoting our view is correct.

分子动力学模拟计算的扩散系数和弛豫时间都遵从Vogel-Fucher关系，进一步支持了过冷液体的非指数弛豫的粒子逃离笼子的机制。

Using the directional derivative formula, the governing equation is discreted in the physical domain in which a nonorthogonal grid system is used. Two kinds of AF2 schemes, i. e. AF2-plane relaxation and full implicit AF2, for the TSD equation are proposed. Numerical results show that the full implicit AF2 scheme converges faster than AF2plane relaxation scheme. For the rectangular wing and swept wing, the results of the present method are compared with FP results, and the agreement is good.

采用适合于梯形机翼和后掠机翼的斜网格，利用方向导数公式直接在物理空间对主管方程进行离散；将近似因式分解方法应用于绕机翼的跨音速小扰动势流问题，提出AF2—面松弛和AF2全隐式两种迭代格式，并对它们的收敛速度进行比较，结果表明后者明显快于前者；直机翼和后掠机翼的算例表明，本文方法的结果与精确势流方法的结果吻合良好。

Primary atrial tumor has obvious characteristic on RT-3DE: All the atrial tumor display the same size of stereoimages as the tumor themselves. There is a clear boundary between the stereoimage of the myxoma and the atrial wall and there exists a short pedicle connecting the atrial myxoma to the atrial wall or the interatrial septum. The body of the atrial myxoma moves to and fro through the atrium and the atrioventricular valve with the contraction and relaxation of the heart with a fixative pedicle. Atrial myxoma leads to relative atrioventricular valve incompetence during systolic phase and relative atrioventricular valve stenosis during diastolic phase, but doesn't result in pathological changes of atrioventricular valve which restore to normal after exsection of the atrial myxoma. Malignant atrial tumor closely and extensively contact with atrial wall without obvious boundary, pedicle and movement with the contraction and relaxation of the heart.

所有心房肿瘤RT-3DE均实时显示与肿瘤大小相同的立体形态图像；心房黏液瘤立体形态图像与心房壁界限明显，都通过一短蒂与房间隔或心房壁相连，瘤体以蒂为固定点随心脏收缩、舒张在心房与房室瓣口之间往返运动；心房黏液瘤收缩期瘤体导致房室瓣相对关闭不全，舒张期瘤体导致房室瓣相对狭窄，但瘤体不引起房室瓣器质性病变，瘤体摘除后房室瓣功能即恢复正常；恶性心房肺瘤立体形态图像与心房壁关系密切，界限不明显，接触范围广泛，无蒂，瘤体不随心脏收缩、舒张运动。

Fictive temperature is used for measuring structural relaxation. By means of infrared spectra, fictive temperature and structural relaxation of silica glass can be characterized well.

假想温度是玻璃结构弛豫的度量，而红外光谱是表征石英玻璃假想温度及结构弛豫的较好方法。

In Chapter 3, considering fractional relaxation equation, we make use of directlythe Grunwald-Letnikov definition to discrete fractional derivative, obtain a numericalmethod of fractional relaxation equation,and give the proof of consistency ,conver-gency and stability.

第三章对于一个推广到分数阶的松驰方程，直接利用Gru¨nwald-Letnikov分数阶导数定义进行离散，得到分数阶松驰方程一个数值方法，并给出了相容性，收敛性和稳定性的证明。

This paper described several applicable measurement techniques and characteri-stics in the study of Spacer grid clipping force relaxation behaviour,such asmeasuring clipping force relaxation in the laboratory,measuring fuel rod brea-kaway force and withdrawal force within the cell of post-irradiated 17×17 asse-mbly,measuring friction force and cell size withi...

本文介绍了定位格架夹持力辐照松弛研究中几种适用的测量方法及其特点，如在实验室研究中测定位格架弹簧力的松弛，在辐照后的17×17验证组件中测燃料棒在栅元中的移动力和滑动力、在抽出燃料棒的空栅元中测栅元摩擦力及栅元尺寸等方法。

MAIN OUTCOME MEASURES: Stress relaxation curves and data; Calculation of normalized stress relaxation functional equation.

主要观察指标：①应力松弛曲线和数据。②归一化应力松驰函数方程的计算。

The determination of the relaxation time spectrum has been recognized as an ill posed problem with degree of ill-posedness increasing as the number of relaxation times increases.

然而松弛谱的计算是一个不适定问题，通常随着离散松弛谱个数的增加，问题的病态性也加重。

Through comparing with the results by simulation to study the effects of theprojectile"s final velocity, the angle of rotation and the ballistic trajectory"s migration withdifferent projectile"s rotating speeds, different target"s moving speeds and differentpenetration angles.

通过比较数值模拟的结果来研究不同弹头转速、目标速度、侵彻角对侵彻过程中弹头最终速度、翻转角度和弹道偏移的影响。

I love stationery and all the accoutrement of writing.

我爱文具以及所有的书写的工具装备。