对比

Objective To compare and evaluate the effect of laparoscopic appendectomy and operation appendectomy on aged patients with acute appendicitis.

文章摘要：目的对比分析腹腔镜和开腹阑尾切除术治疗老年急性阑尾炎的手术效果。

A realistic approach, contrast, apprehensively, continuous, meaning, and so exaggerated way.

手法有写实的、对比的、悬念的、连续的、寓意的、夸张的等等手法。

The paper puts forward stock prediction pattern based on BP Neural Network, depending on Neural Networks approachability to non-linear function. Compared with the prediction method of Time Order, one of the traditional prediction methods, BP algorithm is verified to be feasible and effective on stock prediction.

本文借助神经网络对非线性函数的逼近能力，提出基于BP神经网络的股票价格预测模型，通过对比传统的时间序列预测方法，证实BP神经网络算法用于股票预测的可行性及有效性。

Through numerical calculation and comparison with the complete formula,the accuracy of the approximate formula for calculation of reflection coefficient often used in AVA method for gas hydrate is discussed.

通过与完整公式的对比，对AVA常用的反射系数近似计算式的精度进行了讨论，同时分析了地震波速度、泊松比、密度等参数对于BSR反射系数的不同贡献。

Methods The clinical symptoms of 148 cases with rotary abortion were observed routinely and compared with that of the approximate number of cases selected randomly with suction abortion.

按照人工流产的常规对施行旋动式流产的148例情况进行总结，并与随机抽取的近似数量的负压吸引人工流产做简单的对比分析。

When used in signal expansion, this model can give a relative constant error of approximation in a larger frequency band.

实现了采用此模型的匹配算法，并且通过实验对比了梯度法、相位法和新算法的性能

Through the comparison and analysis of four examples,this paper draws the common methods,procedures and thinking paths of using the definite integral in the calculation of the area of some planar graph s and the static pressure of the liquid.

通过4个例题的对比分析，得出定积分在计算一些平面图形面积和液体静压力的一般方法、步骤以及思考路径。

After analyzing and processing the grating reticle image collected by CCD, the mapping coefficient can be accurately calculated from grid size to pixels. Comparing the fore-and-aft two grating reticle images after the worktable moved. Adopting phase difference ratio arithmetic based on Lissajous figures,the phase difference of two images will be figured out. The displacement of the worktable can be further calculated by the mapping coefficient.

调整光路使CCD获取清晰的光栅图像，对图像进行分析处理，计算出栅距与像素之间的映射关系，再对工作台移动前后的光栅图像进行对比，采用基于李萨如图的相位差比率算法获取它们的像素位置差，从而计算出工作台的实际运行位移。

From the instruction decoder the data pass to the arithmetic/logic unit, which performs calculations and comparisons.

然后从指令解码器到主要负责计算和分析对比的逻辑处理单元。

In this paper, some operators（Roberts, Sobel, Prewitt, Laplacian, Canny） which are frequently used are studied theoretically and arithmetically, and compared with the characteristic of these methods on image edge detection.

阐述了边缘检测在医学图像处理中的重要作用，分析了几种常用算子（Roberts，Sobel，Prewitt，Laplacian，Canny）基本原理及算法实现，并对比各算子的优缺点，并用VC＋＋。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。