该标准的第3部分是对第1部分的补充，并与之一起规定了不同类型纺纱预备和纺纱机发出的噪声的测量，声明和验证所需的安装，操作和测量条件。适用于所提及的标准中规定的工程方法（2级）和检验方法（3级）。无纺布线包括以下机器: - 准备（捆包断路器，自动混合打包机，梳理柳叶，搅拌机，风扇，冷凝器，开启器）等

This Part 3 of the standard is a complement to Part 1 and specifies, together with it, the mounting, operating and measuring conditions required for the measurement, declaration and verification of noise emitted by different types of spinning preparatory and spinning machines. It is applicable to engineering methods (grade 2) and survey methods (grade 3) defined in the standards referred to. Nonwoven lines comprise machines for: - preparation (bale breaker, automated blending bale opener, carding willow, blender, fan, condenser, opener), etc.