指导方针包括:a）简要说明机器和设备发出的噪声的基本标准的基本原则; b）协助选择适当的基本标准; c）关于补充基本标准的一般信息，以及关于特定类型的机器或设备的安装和操作条件的说明;这些说明通常纳入测试代码

Guidelines comprising a) brief explanations of the principles underlying the set of basic standards for measuring noise emitted by machines and equipment; b) assistance in the selection of the appropriate basic standard; c) general information on supplementing the basic standards with instructions concerning the installation and operating conditions for the particular type of machines or equipment; such instructions are usually incorporated in test codes.