查询词典 noise

Fully and clearly analytic expression of multiwavelet transformation is given .The experiment of speckle reduction to US image is implemented by choosing local error as threshold. Results show that multiwavelet transformation is useful for speckle reduction and there have little noise and reserve important image features such as boundary when compared to results obtained from existing the denoising methods alone.

在二维图像阵列的应用方面，通过采用局部方差作为阈值，对超声斑纹图像进行阈值化去噪处理的实验结果表明，多小波变换在有效抑制斑纹噪声的同时，相对于其他方法还能更好地保留原图像的边界等重要特征信息。

In active noise control applications, the existence of disturbance can significantly degrade performance of ANC systems.

中文摘要在实际的主动噪音控制系统应用中，干扰讯号的存在会破坏系统的性能。

Several active noise control algorithms often used in practice are introduced, the performances of the ANC algorithms are analyzed, and some...

最后对算法的选择提出了建议，并对ANC的未来发展进行了展望。

It provides steady lifting with low noise, and is equipped with lifting brackets, anti-fall supporting protection, stopping protection against wire fracture, limiting device for maximum load, control device for maximum lifting height and fixing device for the turning angle of the bracket arm.

升降平稳、噪音低，并设有举升托架、防跌落支承保险、钢索断裂制动保险；最大负荷限定装置和托臂回转角度锁定装置。

The speed also affects combustion noise through variation of advance angle.

推迟供油提前角可以显著降低噪声。2、燃烧系统多参数分析2.1、喷孔数目在喷油压力不变时，减少喷油孔数量，可使促进燃油雾化，使着火延迟期缩短，因而有助于降低压力升高比，汽缸压力频谱线也相应降低，尤其是中、高频成分降的更多些。

The kinetic characteristics of the wide angle seismic signal and the effect of the wide angle reflection for noise have been analyzed by the forward theoretical model.

利用正演理论模型分析了广角地震信号的运动学特徵以及噪声对广角反射的影响。

The effects of small angle rotation of texture images and noise to the parameterestimation of Gauss-MRF model are researched.

研究了工件表面纹理图像的小角度旋转和噪声对高斯马尔可夫随机场模型的参数估计的影响，数据分析表明高斯马尔可夫随机场模型所估计的参数对于小角度的旋转纹理具有不变性。

By correcting noise variance matrix of system state of constant turn model wit h maneuvering frequency coefficient and angular accelerˉ ation variance, the turning model set with different angular was d esigned, the model probability matrix was given. An interactive multiple model algorithms with adaptiveˉturning model w ere built.

通过机动频率系数和角加速度方差修正常速转弯模型的系统状态噪声方差矩阵，设计了不同角速率的转弯模型集，给出了相应模型的状态转移概率，建立了一种自适应转弯模型的交互多模型算法。

Angular noise correlation time has great influence on the linewidth in the intensity spectrum.

标 签 泛函导数定态强度分布一级相变类比瞬态解本征值 functional derivation steady-state intensity distribution first-order-like phase transition instantaneous solution eigenvalue

It absorbs the axial.radial and angular displacement and also a vibration and noise isolating device.

它通过波纹管的柔性变形来吸收管线的轴向、径向和角向位移，同时也能起到隔振降噪效果。

And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时，论述了一体化管理体系构建中的几个主要问题，包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。