噪声控制

The measures of noise control: the wall of operating room is completely paved with 30mm thickness aluminum perforated acoustic panel, 100mm cavity; the ceiling is completely paved with 30mm thickness aluminum perforated acoustic panel, and 200mm cavity door is used as the sound insulation door.

噪声控制措施：操作室墙面满铺30 mm厚铝穿孔吸声板，100 mm安装后空腔；天花满铺30 mm厚铝穿孔吸声板，200 mm安装后空腔门为隔声门。

This model can be used to noise control engineering, as well as to the practice of acoustical design.

该方法可用于厂房、办公室等场所的噪声控制及室内音质设计的实践中，并可进一步应用于声场可听化研究，具有广阔的应用前景。

The ANC system based-on QRLS could be used in real life.

实际噪声控制中应用QRLS算法是可能的。

Rational planning of city roads is of great significance to the future noise control in the urban areas.

合理的城市道路规划，对未来的城市噪声控制具有重要的意义

The noise control of closed three-dimension domain (such as the cabin, cab, workroom, etc) is practical significance.

三维封闭空间(如船舶舱室、汽车驾驶室、工作间等)的噪声控制具有重要的实用价值。

Modal analysis of an acoustic system can determine its natural frequency and show the distribution of the acoustic quantities in space, give the knowledge about the way that the acoustic system responses are affected when changes are made in the excitation sources or in the domain geometry, and provide valuable information for the noise control of closed three-dimension domain.

通过对声学系统的模态分析，可以得到其固有频率以及在此频率下声学量在声场空间上的分布，了解到声源及声场空间几何参数的变化对声学系统的相应的影响，为三维封闭空间的噪声控制提供了依据。

In noise control and condition monitoring or fault diagnosis by using the information of noise sources, it is esse...

噪声控制或利用噪声源信息对机器进行工况监测和故障诊断，首先必需识别噪声源信号。

The control of vibration and noise is vital to environmental protection、the auto's flatness and endurance.

汽车振动、噪声控制关系到环境保护、汽车行驶平顺性和车辆的耐久性。

Gearbox is a key part of car, so noise control of gearbox is becoming more important.

变速箱作为汽车的重要组成部分，对其噪声控制也越来越重要。

Finally, the future of noise active control is proposed, that is design theory and method of sound interdict strap, active sound absorption and research of new absorption material.

最后，提出噪声控制工程的未来发展方向，即：声学禁带设计理论与方法，主动吸声，新型吸声材料的研究。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。