You find that with any existing simple "noise-meter", vehicles which are judged to be equally noisy may show considerable difference on the meter.
你会发现，使用任何现有的简单“噪音表”，被判定为发出同样大小噪音的车辆，在表上可能显示出相当大的差异。
This article introduces the method of extending noise figure meter HP 8970a measurement frequency range.
本文介绍了扩展噪声系数表hp 8970a测量频率范围的方法。
Conclusion Recording sound level meter can be well used to measure and assess noise exposure in complicate working environment.
结论个体噪声暴露测量可以较好地解决现场复杂情况下的噪声暴露评价问题。
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