The main resons of negative reaction were noise, virus infection in early pregnancy, lower birth weight premature.
影响婴儿听力的主要高危因素为噪声、母孕早期病毒感染、早产低体重。
This article discusses mainly the resons that the noise creates during the operating of the wire braider and ways to control, and demonstrates the designs for noise eliminating cover in detail.
本文主要就用于生产高压钢丝编织胶管的设备——钢丝编织机，在运行中产生的噪声原因及治理方案进行论述，并具体介绍了消音罩的设计。
This article discusses mainly the resons that the noise creates during the operating of the wire braider and ways to control, and demonstrates the designs for noise eliminating cover in detail.
本文主要就用于生产高压钢丝编织胶管的设备——钢丝编织机，在运行中产生的噪声原因及治理方案进行论述，并具体介绍了消音罩的设计。
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