变化点

After the analysis of the arch width change, the clinical effects of arch expansion with straight Ni-Ti wire were evaluated.

选择直钛镍丝扩弓的32例非拔牙矫治患者，分别测量扩弓前后牙弓宽度变化及牙槽座点位置变化。

A new method of automatic segmentation is developed based on the extreme point properties of wavelet transform. The method consists of two main steps: 1. Using the multi-resolution properties of wavelet transform, we can get the information of shape variation with space coordination.

该方法包括两个主要步骤，一是利用小波变换的多分辨率特性得到测井曲线的形态特性随空间坐标的变化信息；二是利用小波变换过零点的特征在不同尺度上的反映，提取不同尺度下的奇异点作为分层的待参考点，结合实际情况最终确定分层点。

The rabbits were immobilized according to the standard of X_knife before CT scanning. The interrelation of the silica gel tube and bony structures was analyzed, a nerve segment was selected, which could be localized according to the related bony structures as irradiation target. A radiosurgery treatment planning was performed on the selected nerve segment, its changes of pathology and ultrastructure were observed. Results: Base on the dissection, the rabbits' sciatic nerve was composed of the seventh lumbar nerve and first and second sacral nerves.

通过解剖分析兔坐骨神经主干的解剖位置和行径，选择照射靶点，放置硅胶管进行标记，按X_刀标准行CT扫描，从CT图像上分析硅胶管与荐骨和髂骨的位置关系，确定可以用骨性结构定位的神经段作为照射靶点，利用立体定向技术单次大剂量照射坐骨神经，观察其病理及超微结构变化。

The results show that the formation of the shear band is characterized with both strain localization and the localization of the averaged pure rotation ratio. The shear band starts right at the point where the volume strain changes from shrinkage to expansion. The development of these variables are significantly different within or outside of the shear band. Particularly, the stress-strain softening relationship was observed near or within the shear band, while the hysteretic phenomenon takes place outside the shear band. In addition, both the volumetric and deviatoric strains are larger inside than outside the shear band, with the soil being looser in the shear band.

研究表明：砂土剪切带的形成过程即为试样内部应变局部化过程，也为试样内部平均转动率(averaged pure rotation rate， APR)的局部化；剪切带开始形成点也为试样剪缩、剪胀分界点；剪切带内外各宏微观参数变化规律上存在明显的差异，主要表现为近剪切带位置土体及带内土表现为应变软化现象，而距带中心较远土体应力应变关系曲线出现'回滞圈'现象；带内变形量明显大于带外，且带内较带外松散。

Based on the characteristic of the vegetation scatter plots in the redband and near infrared band, this paper mainly aims to probe a new method ofextracting vegetation changes by building the coordinate plane of brightindex-perpendicular vegetation index and then getting the variation vectors.

基于植被在红光波段与近红外波段坐标系中的散点图特征，本文着重探讨了一种通过建立多时相&亮度-垂直植被指数&坐标平面，利用变化向量提取矿区植被变化的方法。

To overcome target expansion, shape transformation and occas ional frame lost due to the missile phase motion of television guided bombs , a modified weightˉrelated function, t arget tracking strategy, template updating and modifiˉ cation, and tracking point positioning method as well as a predict ion method to solve the frame loss of target were proˉ posed. Based on this, an improved weightˉrelated matching tracking a lgorithm was realized.

针对电视制导炸弹中弹目相对运动变化而导致的目标尺度变化、几何形变以及随机因素造成的暂短丢帧现象，文中对相关测度函数进行了基于弹-目距离的中心加权修正，提出了相应的模板更新与修正策略、基于线性预测的目标位置的预测方法、跟踪点的定位方法等，在此基础上，实现了基于加权相关的图像匹配跟踪算法。

Aiming at the circumstances of time-varying target brightness or multiple targets with different brightnesses,a video amplitude controller feedback system is designed to precisely locate a spot target image on a linear CCD with edge detection by fixed dual thresholds and pixel subdivision by gray weighted centroid algorithm.

针对具有不同亮度的点目标或某点目标亮度不断变化的情形，设计了线阵CCD 视频幅值调节器反馈系统。

The aseismatic reliability of long-span space lattice structures with multiple support excitation based on the pseudo-excitation response spectrum method is analyzed and compared with one under simple support excitation,the variation of the reliability index of each element is investigated simulataneously.

在虚拟激励反应谱法的基础上进行了多点输入下大跨空间网格结构的可靠度分析，并且将之与一致输入下结构抗震可靠度的分析结果进行了对比，考查了两种输入方法下杆件内力可靠指标之间的变化，进而分析了危险杆件在结构分布、数量等方面的差异以及危险杆件随结构跨度、视波速的变化关系。

Plants were hydroponically grown in solutions containing 3 mM Ca(NO3)2 or 3 mM NH4NO3 as nitrogen source. Mature plants were harvested eight times in one day at a 3 hr. interval from 8:00PM Aug. 12 to 5:00PM Aug. 13. Diurnal variations of the shoot nitrate content were observed in either Ca(NO3)2 or NH4NO3 treatment. Shoot nitrate content of Ca(NO3)2 treated plants were higher than those treated with NH4NO3 at every harvest. The average shoot nitrate content of lettuce with Ca(NO3)2 was 0.68% of the dry weight, and it was 0.29% for the NH4NO3 treated lettuce. The fresh weight of the NH4NO3 treated lettuce were 1.43 or 1.2 fold heavier than those with Ca(NO3)2 treatment for shoot or root respectively.

R36品种以3mM硝酸钙(6mM N)或3mM硝酸铵(6mM N)处理，於8月12日下午8点开始采收，每隔3小时采收一次，采收至8月13日下午5点。3mM硝酸钙与3硝酸铵两种养液处理的地上部硝态氮含量皆有日变化，而且在8个采收时间，3mM硝酸钙养液处理的地上部硝态含量皆高於3mM硝酸铵处理。8个采收时间的硝态氮含量平均，3mM硝酸钙养液为乾物含量的0.68%，而3mM硝酸铵处理为0.29%。3mM硝酸铵养液处理的地上部与根部鲜重分别为3mM硝酸钙处理的1.43倍及1.2倍。

However, such a combination does not mean the traditional graphics or simply just copy the misappropriation, but rather to knowledge and understanding of the traditional graphics, and on this basis, gradually digging, change and transformation of the traditional graphics, and allow traditional graphics into the design of a new creative point and inspiration point, thus mapping out Hwan viable model of modern Chinese symbol.

然而，这样的组合并不意味着传统的图形或干脆只复制盗用，而是知识和传统图形的理解，并在此基础上，逐步挖掘，变化和改造传统图形，让传统图形成一个新的创意点和点的设计灵感，从而设计出焕现代中国的象征可行的模式。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。