低噪音高质量设计，减少人员操作不便。
The low noise high grade design, reduces the personnel operates inconveniently.
多级降压调节阀主要应用于有气蚀、噪音高、流体压差高的环境。
Multistage decompression regulating valve is mainly applied to cavitation, high noise, fluid high pressure environment.
这方面例子的范围包括从食物或水供应的污染，到空气或噪音高度污染、化学事故、疾病暴发或自然灾害。
Examples range from contamination of the food or water supply, to high levels of air or noise pollution, a chemical accident, a disease outbreak or a natural disaster.
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