查询词典 method of difference

A new prestack depth migration method that is based on wave field continuation has been developed by combining physical model of plane wave synthesizing with Fourier finite difference operator for wave field continuation.

本文将平面波合成的物理模型与傅里叶有限差分波场延拓算子相结合，提出了一种新的基于波场延拓的叠前深度偏移方法。

Contributions of shaping variables and sizing variables of frame structure to objective function are measured in the concept of a relative difference quotient method.

利用相对差商的概念，将框架结构形状变量和截面尺寸变量统一考虑，根据两类变量的相对差商值确定优化搜索的方向。

A leave-one-out error bound for SVR is derived in this paper. After the SVR model is obtained for a given set of hyperparameters, the bound can be computed with very little additional work. Considering the properties of the bound, an optimization method based on difference quotient is proposed.

本文针对当前SVR推广误差的估计大多需要较大计算费用的情况，推导出SVR的留一法误差的易于计算的界，这个界在得到学习算法的解后需要很少的额外工作量。

Based on finite difference method and stereolithography file schema, the key techniques of mesh generation in foundry computer aided engineering system have been studied, including the technique for fast generating outlines of cross-section, the technique for handling error tolerance and the technique for rapidly generating mesh from cross-section.

基于有限差分法和标准模板库，研究铸造计算机辅助工程系统中的网格剖分关键技术，具体包括STL实体截面轮廓快速生成、容错处理，以及截面网格信息的快速提取等技术。

This review summarizes the research progress in biology, molecular biology, isolates and control of it, particularly on the research of the virus genome and the sequence difference among isolates by using molecular method.

概述了国内外关于柑橘碎叶病毒的生物学、分子生物学、病毒的株系和控制方面的研究进展，尤其是对近些年用分子生物学方法研究病毒的基因组和株系序列差异方面的情况作了详细的介绍。

The method based on residues' difference look up table as presented in the paper can resolve the ambiguity of m...

尤其是在目标个数较少、系统设计脉冲重复频率选择合适的情况下更为有效

For a four PRFs' radar system, the resolved results calculated by the residues' difference look up table method from any two of the target distances detected are equal.

对于一个四重脉冲重复频率的雷达系统，利用真实目标在任何两个脉冲重复频率上检测得到的视在距离，经过余差查表法匹配解得的目标距离是相同的这一特性，可以对多目标进行解距离模糊。

objective: to evaluate the efficacy and safety of expectorant mucosolvan aerosol inhalation in lower respiratory tract infections.method: 86 patients' clinical symptoms with lower respiratory tract infections were observed to identify the difference during the treatment.result: two groups efficiency comparison differentiae exits palpability (p.01), obvious side effect was not found in mucosolvan.conclusion: mucosolvan will be effective to treat lower respiratory tract infections, it's safe and reliable.

目的：评价祛痰剂沐舒坦雾化吸入治疗下呼吸道感染的临床疗效及安全性。方法：观察 86例下呼吸道感染患者治疗治疗前后咳嗽、咳痰等临床症状的变化。结果：两组有效率比较差异有显著性(p.01)未发现沐舒坦有明显副作用。结论：沐舒坦治疗下呼吸道感染疗效确切安全可靠值得临床进一步推广使用。

But the construction drawing budget method can cause the greater difference between the accounting results of development organization and construction organization due to their different accounting errors, different understandings of construction drawing and different dinking modes, which leads to the difficulty in project settling accounts.

但是，由于施工图预算计算起来往往由于预算人员的计算误差和对施工图理解的不同，思维方式的不同，造成建设单位和施工单位计算的结果误差较大，给工程结算造成较大的麻烦。

The basic feature and principle of the PAL are introduced and the difference between the characteristics of hard design and soft design is described as well. Next, the soft method based on the Dirichlet principle is given in detail.

首先，概述和比较不同的老视矫正镜片，介绍渐变镜片的基本结构特征和矫正原理，比较分析软设计和硬设计之间的区别。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。