reducing exposure (both occupational and recreational) to loud noises by using personal protective devices and by engineeringnoise control.
通过使用个人保护装置以及噪音控制工程，减少接触噪音时间。
2
The results indicate that the established test system meet the requirement of engineering precision and can distinguish main tractor noise source effectively.
结果表明：所建立的测试系统可满足工程精度要求，能有效识别拖拉机主要噪声来源；
3
Testing and analyzing of interior noise and electrical parameters are of great significance in engineering practices.