Thus the utility model can inhibit the increasing of the noise grade as the vibration of the rotator 171 is not amplified by the resonance frequency.
这样，由于转动 体171的通过振动不会被共振频率放大，因此可以抑制噪声等级的增 大。
It does this by fitting small piezoelectric acoustic sensors to parts of the structure to detect the particular frequency of noise caused by a crack in aircraft-grade aluminium.
把小型压电声传感器安装到这种构造部位上，检测由航空级铝材裂纹所致的特定频率的噪音，靠这样就能监测飞机裂纹。
The low noise high grade design, reduces the personnel operates inconveniently.
低噪音高质量设计，减少人员操作不便。
Use of automatic doors, can save energy, reduce noise, wind, dust, and can make our entrance is dignified and high-grade.
使用自动门，可以节约空调能源、降低噪音、防风、防尘，同时可以使我们的出入口显得庄重高档。
The cause inducing noise pollution on high grade road, and the noise abatement measures both at home and abroad are introduced. A way to precaution noise given.
介绍了高等级公路噪声污染产生的原因，介绍了国内、外降噪的主要措施，同时提出了防噪声方式。
Vibration value and noise of bearing are reduced, over 50% bearing's vibration value achieve Z2 grade, need of bearing market is satisfied.
从而降低了轴承的振动和噪音，使其50%以上达到Z2组振动值要求，满足了轴承市场的需要。
The invention discloses AC generator for vehicle use capable of reducing temperature rising and grade of electromagnetic noise.
本发明提供一种能降低定子温度的上升和电磁噪音声级等的车辆用交流发电机。
Electronic no-grade timing, automatic constant high temperature, constant energy relay control and it is stabilization and reliable, long life and less noise.
电子无级变迅自动高温，固能继电器控制，稳定可靠、寿命长、低噪音。
Traditional image enhancement algorithm enhances the contrast grade and noise of image at the same time. So, noise reduction is needed.
传统图像增强算法在增强对比度的同时，也很大地提升图像噪声，需要对图像进行降噪处理。
High Grade Low Noise Microphone cable (Karaok)!
高保真低噪话筒线！
High Grade Low Noise Microphone cable (Karaok)!
高保真低噪话筒线！
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