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。

youdao

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。

youdao

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。

youdao

It has Burr-Brown 2 Channel low-noise Op Amp, ELNA Audio Grade Capacitor and a R-core linear power supply - doesn't mean that much too you?

ENGADGET: High-end DVD up-scalers - a great alternative? HD