一、降噪几个基本问题1．基本方法（1）降低系统中噪声源的噪声。（2）防止和减弱噪声的传播。方法（1）是根本的、有效的措施和直接的手段。如借助无噪声动力源、无噪声传动或更换泵的类型可达到目的。但此法通常多涉及机械结构的改动和部件工艺变化，对生产厂家来说较难做到 First, several basic issues of noise reduction 1. The basic method (1) to reduce noise in the system noise source. (2) prevent and reduce the spread of noise. Method (1) is a fundamental, effective measure and direct means. Such as using a noise-free power source, noise-free transmission or change the type of pump can be achieved. However, this method usually involves more mechanical structure changes and changes in process components, manufacturers are more difficult to do