查询词典 extraction

Objective To explore how to regain artistic of diastem of anterior teeth extraction of adult orthodontic .

该方法对成人正畸时前牙区拔牙间隙的临时性修复不失为一种有效而可行的方法。

The results showed recovery of spiked sample and RSD from method of ultrasonic extraction with methylene dichloride met timeliness and accuracy requirements of SVOCs monitoring in soil.

结果表明，二氯甲烷超声萃取法提取土壤中的半挥发性有机物的时效性，准确性能够满足监测分析的要求。

Dichloromethane was used as the solvent and selected optimal extraction conditions were selected and adopted.

选择二氯甲烷为溶剂，λmax=272nm，参比油浓度C_1和C_2分别为45mg·1~(-1和350mg·1~(-1左右，工作曲线测量范围为45—300mg·1~

The data offer important information for the further research of extraction, analysis and pharmacology of the Dichondra Repens forst polysaccharides.

这为进一步提取、分析马蹄金多糖及其药理学研究提供理论依据。

The Dichondra Repens forst polysaccharides was extracted by ultrasonic wave in different temperatures (20, 40, 80, 100℃) and water-bath and followed by water extraction and ethanol precipitation with sevag method to excise the protein.

比较不同温度条件下超声水提－醇沉和加热回流水提－醇沉提取马蹄金多糖的效率，再分别用Sevag法去蛋白制得粗多糖，从而确定一种马蹄金多糖提取的最适方法。

In this dissertation, based on the extraction of meaningful polarization information, the polarimetric speckle reduction, polarimetric contrast enhancement, polarimetric classification and ship detection in polarimetric SAR images are systemically studied. During the study, some new concepts and methods are introduced, which are supported by the application to measured Pol-SAR data. The innovations of this dissertation are as follows: 1 A simplified schem is proposed to reduce the complexity of scattering-model-based speckle filtering. 2 Extend the expression of polarimetric correlation coefficient to help distinguishing targets. In addition, introduce the quantized parameters of polarimetric signature so as to show the differentiae in quantity in co-polar power, cross-polar power and shapes of polarization signatures among targets. 3 Define a new parameter of difference degree between targets, which can be used for express the difference between both coherent and distributed scatters.

论文在较系统的研究目标特征量提取方法和特征量所包含的物理意义的基础上，对极化SAR图像降斑、极化对比增强、极化SAR图像分类以及极化SAR图像中海上舰船目标检测等方面进行了研究，并提出了一些新的概念和方法，对实测数据的处理结果表明，这些新的概念和方法对于极化SAR信息处理是有效的，本文的主要创新成果包括以下方面： 1）针对基于预分类的MMSE极化降斑方法实现过程非常复杂的问题，提出了简化方案，并验证了方案的有效性； 2）扩展了极化相关系数的表示方法，这种扩展增强了极化相关系数对目标的区分效果；另外还提出了极化特征图量化参数，可以从量上表征不同目标间相同极化和交叉极化的回波功率差异和极化特征图形状差异； 3）定义了目标间的差异度参数，它不仅可以用于描述相干目标，还可以用于描述分布目标的差别程度。

To study this situation,this paper proposes a theoretic and dynamical differential game ,in which the utilities of the two kinds of producer are the discounted profits and their decision variables are their choices of energy extraction and production.

就此情形构建了两类能源的生产者以各自的市场利润最大化为目标，以能源的开发与市场供给时间路径为战略选择的一个动态微分博弈的理论模型，研究两类能源并存的能源市场的均衡路径，分析两类能源的市场供给、市场价格、不可再生能源储量等经济变量的均衡特征和时间依变性质。

Effects of treatment period, external applied current density, chloride diffusion coefficient and rate constant on the extraction ratio of chloride ion are discussed.

利用数学模型数值模拟研究了处理时间、电流密度、氯离子扩散系数和速度常数等相关因素对脱氯过程的影响，为铁器文物保护方案的制订提供理论依据。

The general situation of research of the determination methods of digestibility, extraction and properties of sorghum kafirins were summarized.

该文介绍高粱醇溶蛋白的提取方法，特性和消化性测定方法，并简单分析高粱醇溶蛋白发展前景。

This paper presented a new feature extraction according to the characteristics of display value of digital meters.

根据数字仪表字符的特点，提出一种新的特征提取方法。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。