1前言九十年代初，我国许多洗衣机生产厂家相继上马全自动洗衣机生产线，但是由于对全自动洗衣机的技术难度估计不足，生产的全自动洗衣机存在噪声大、可靠性差等问题，迫使近二十个厂家不得不使投资巨大的全自动洗衣机全套生产线停止运转。以后多年来，全自动洗衣机的噪声指标 1 Preface In the early nineties, many washing machine manufacturers in China launched the automatic washing machine production line one after another, but because of the technical difficulty of the fully automatic washing machine, the automatic washing machine produced had the problems of noise and poor reliability, forcing nearly 20 Manufacturers have to invest huge automatic washing machine full production line to stop functioning. After many years, automatic noise indicators of washing machines