前几期中我们向您介绍了有关呼吸系统防护用品的知识，本期中我们将向您介绍个体防护用品的另一大类：听力保护用品的有关知识。当我们暴露于噪声中时，就要对听力进行保护。什么是噪声呢？应当说一切惹人讨厌，令人烦噪，人们不愿意听的声音都是噪声。噪声是声音的一种，... In previous issues, we introduced you to the respiratory protection products. In this issue we will introduce you to another category of personal protective equipment: knowledge of hearing protection products. When we are exposed to noise, we need to protect our hearing. What is noise? It should be said that all annoying, annoying, people do not want to hear the noise is noise. Noise is a kind of sound, ...