The simplest way to dampen a helicopter's noise is to increase the Angle of the rotor's blades, also called the pitch, and slow them down.
要降低噪音，最简单的方法是增大旋翼桨叶的夹角，也叫“节距”，或是降低转速。
The level of noise we hear also depends on the Angle and distance of the shell from the ear.
我们听到声音的大小同时也取决于贝壳与耳朵的角度及距离。
Air compressor noise is the main noise source. From the Angle of air flow noise, can be briefly analyzes the following.
气流噪音是空压机的主要噪声源。从气流噪声的角度，可以简要分析如下。
By experiment, for the effect of fan expending Angle to noise and efficiency study.
通过实验研究离心风机蜗壳扩张角对风机噪声及效率的影响。
Thermal noise and wind gust are the most significant random disturbances to radar Angle tracking.
热噪声和阵风是雷达角跟踪系统中的两个主要随机干扰源。
Adopt composite pneumatic friction clutch-brake with small noise, large clutching and braking torque, small braking Angle and long service life.
采用组合式气动磨擦离合器与制动器，噪音小，离合、制动扭矩大，制动角度小，使用寿命长。
Extend the expressions of the minimum mean squared error bounds of the references, and give the relations of the minimum mean squared error bounds of pose Angle and noise standard deviation.
对文献中已给的目标方位角的最小均方误差表达式进行了推导，并且给出了方位角的最小均方误差和噪声偏差之间的关系。
The paper analyzes the reasons why there are noises with Angle plunger pump and puts forward noise reduction measures.
分析了斜轴式柱塞泵产生噪声的原因，并提出了减低噪声的方法。
From the Angle of noise detection, this paper presents a mask-based no-reference approach of image quality assessment.
针对数字图像的客观质量评估，从噪声检测的角度，提出了一种基于掩盖效应的无参考图像质量评估方法。
High tooth gear has small module, small pressure Angle, and large addendum to enlarge the transverse contact ratio, improve gear strength, and reduce the noise.
细高齿齿轮是采用小模数、小压力角、大齿顶高来加大端面重合度，达到提高齿轮强度、降低噪声的目的。
Towing ship noise is a kind of wideband interference with strong multi-path and Angle dispersion for a towed line array sonar system.
由于拖船噪声是一种具有多途角扩展的宽带相干强干扰，拖船噪声抑制是拖线阵声呐系统中的关键技术之一。
With unknown noise level, the MSD is of "angle type".
当噪声水平未知时，匹配子空间检测器属于“角度型”检测器。
The noise level also depends on the angle and distance of the shell from the ear.
另外，声音的大小也会取决于贝壳与耳朵间的角度及距离。
From the Angle of engineering application, the paper studies signals division and reconstruction, signals strangeness detection, data condensation and reconstruction, and signals noise reduction.
从工程应用的角度出发，进行信号的分解与重构、信号的奇异性检测、数据的压缩与重构、信号的消噪等若干方面的研究。
It proves that the modified slanted edge method has high measurement and repeat accuracy, and also has a better immunity to noise and edge Angle.
说明其具有较高的测试准确度和良好的测试重复性，并且具有较强的抗噪性，基本不受刃边倾角变化的影响。
According to different existences of noise background and signals, there are several approaches to azimuth Angle estimation based on a single vector hydrophone.
根据不同的噪声背景和信号形式，单矢量水听器有多种方位估计方法。
A novel wide-angle driving method is proposed to reduce the torque ripple and noise.
提出了一种广角波驱动控制方法，降低了压缩机转矩脉动，减小了压缩机噪声。
For the washing machine noise and vibration reduction predecessors developed a series of mechanical damping Angle of approach, but there are limitations.
针对洗衣机的减振降噪前人开发了一系列机械角度的减振方法，但都存在种种限制。
For the washing machine noise and vibration reduction predecessors developed a series of mechanical damping Angle of approach, but there are limitations.
针对洗衣机的减振降噪前人开发了一系列机械角度的减振方法，但都存在种种限制。
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