With a more aerodynamic shape and framed by a curved tail plane, these engines would make for a more streamlined aircraft, as well as directing most of their noise upward.
通过更加符合空气动力学的形状和一个曲线尾巴的飞机结构，这些发动机将使飞行更有效率，同时会将绝大部分的噪音传向空气上方。
The results indicate this method can effectively extract texture feature of gray image target, and has robust to noise and change of target shape.
结果表明，这种特征提取方法能有效地提取灰度图像目标纹理特征，并且对噪音和形状的变化具有强鲁棒性。
To solve the problem of ellipse - object - shape parameters detection in noise image, a new detection algorithm using nonlinear data fitting model and cross-reference iterative method is proposed.
为提高噪声环境下椭圆类物体形状检测算法的稳定性与准确性，本文提出非线性数据拟合模型结合交叉参考迭代的新思路。
To improve the efficiency and reduce the noise of the axial fan, Optimization is made for the pneumatically designing through Composite shape arithmetic.
为了提高轴流通风机的效率和降低噪音，用复合形法对轴流通风机的气动设计进行优化。
With strong ability of discovery of arbitrary shape clusters and handling noise, density based clustering is one of primary methods for data mining.
基于密度的聚类算法因其抗噪声能力强和能发现任意形状的簇等优点，在聚类分析中被广泛采用。
Zero-crossing detector is capable of predicting the shape changes of power spectrum so as to find the newly emerged moving sound sources in ambient noise.
过零检测器可以通过预报功率谱形状的变化来发现环境噪声中新出现的运动声源，研究了过零检测器的检测性能。
The chain code was replaced by the shape signature and used to express the contour, improve the speed and decrease the effect of noise and transformation due to camera calibration.
在特征表示方面，用形状签名代替链码来描述轮廓，从而提高了计算速度，降低了由噪声干扰和镜头形变造成的影响。
The tooth shape deviation in the worn traction gear will increase the vibration of traction gear and traction motor, increase the noise and increase by large scale the dedendum stress.
牵引齿轮磨损产生的齿形偏差使得牵引构轮和牵引电机振动加剧，噪声增大，齿根应力大幅度增大。
The experiments in water tunnel and the design data indicate that the drag and noise of the optimal shape are improved.
水洞试验和计算结果表明，优化外形的阻力有较大降低，噪声性能有一定改善。
DBSCAN is a density based clustering algorithm that can efficiently discover clusters of arbitrary shape and can effectively handle noise.
DBSCAN是一种基于密度的空间聚类算法，在处理空间数据时具有快速、有效处理噪声点和发现任意形状的聚类等优点。
First, in gene chip image preprocessing, different noise models and several general filtering methods are discussed. Then a new method called shape adaptive DCT filtering is introduced.
首先，在基因芯片图像预处理方面，本文根据基因芯片图像噪声的特点以及常用的滤波算法，提出了形状自适应DCT滤波方法。
Using Shape edge template matching technique to find the feature point and abstract the area of ROI automatically, calculate number of the pixels that the connected areas have to remove noise further.
提出了利用图形边缘模板匹配搜寻特征点自动提取ROI区域，通过计算连通区域包含像素进一步去除噪声的方法。
Just like in the previous step, convert this shape to a smart object, then add a little noise.
就像在上一步中，转化形成的智能对象，然后添加一个小的噪音。
This paper discusses methods of recognizing different kinds: of ship objects by the shape of averaged power spectrum of radiated noise. This paper considers the pre-processing of data first.
本文介绍根据辐射噪声的平均功率谱的形状识别两种不同型号的船舶目标的方法。
The results of experiments show that the proposed method can raise Signal-to-Noise Ratio (SNR), decrease Mean Squared Error (MSE) and preserve the shape of signal;
实验结果表明：该方法不仅能够很好地保持信号的形状，而且信噪比较高、均方误差较小；
The tooth shape of gear pump has important influence on machining and characteristics of pumps, such as flow rate, fluctuation rate and noise etc.
齿轮泵的齿形对泵的加工、性能(如：流量、脉动率、噪声)等有很大的影响。
Multi-order modulators shape the quantization noise even harder to higher frequencies.
多阶调节器在更高频率形成更大的量化噪声。
This algorithm combines robustness to noise with flexibility to represent a broad class of shape...
该算法对噪声具有一定的鲁棒性，并对于不同的外部形态具有较大范围的适应性。
By using a symmetric structure for the rotor shape, the utility model effectively improves dynamic balance capability of the rotor of the vacuum pump and decreases rotating noise of the pump.
它采用对称的转子形状结构，有效地提高了真空泵转子的动平衡性能，有效降低了泵的运转噪声。
In this paper, an online inspecting scheme of noise is introduced by employing the band sampling method, and the design of wave shape and the implementation of HF radar system are presented.
研究了采用带通采样的方法，实现HF雷达噪声频谱在线监测的原理，以及频谱监测的波形设计和系统实现。
Platform shape, compact structure, attractive appearance, easy operation and low noise.
平台化设计，结构紧凑，外观精美，操作简便，噪音低。
The image of point target in the imaging area is only several or dozens of pixels. And its strength is relatively weak and drowned in the noise, no obvious size, shape, texture, and other information.
点目标的成像面积仅为几个或几十个象素，目标强度相对较弱，无明显的尺寸、形状、纹理信息可供后续处理系统进行分析使用。
This paper states the geometric shape design and principle of rigid traveling wave pasted layer for reducing noise and drag.
本文给出硬质随行波减阻降噪贴敷层的几何参数设计及原理。
Expressway noise barrier not only can greatly reduce noise, but also can change its shape and type according to various surroundings.
公路声屏障不但降噪量大，而且可以因地制宜地建造各种类型和造型，充分与环境协调一致。
Better disposition of stress on the machine of the nice shape to make performance of work highly efficient at high-speed sewing with little vibration and in low noise.
本机具有美观新颖的外观，并且改善了整机应力分布，在高速缝纫状态下，震动小，噪音低、可实现高效率的作业。
Better disposition of stress on the machine of the nice shape to make performance of work highly efficient at high-speed sewing with little vibration and in low noise.
本机具有美观新颖的外观，并且改善了整机应力分布，在高速缝纫状态下，震动小，噪音低、可实现高效率的作业。
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