3.1 尺度方法(criterion-level method) Rothenberg 的‘尺度方法(criterion-level method)’是喉头仪信号的最大值和最小值为 标准，设定20~50%内一定的尺度，照此决定 开启/关闭点。
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Methods the sound level and frequency were measured according to the corresponding health criterion and measuring method at big production equipment, crush room, control room and workshop.
方法是根据有关卫生标准及检测方法对生产设备、休息室、控制室等作业场所进行声强和频谱的测量。
Secondly, using the AHP method, an integrated spatial analysis model for Lashihai ecosystem health study was constructed comprehensively and the 6-level assessment criterion has been established.
然后，采用层次分析方法（AHP），融合自然综合指标、人文因素指标在内的生态系统健康综合评价模型，确定6级的生态系统健康评估标准；
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