2024-12-5 16:27| 发布者: MArtian| 查看: 17| 评论: 0
12.5.1 测试仪器应采用声级计,精度不应低于2级。
12.5.2 测试仪器距地面应为1.2m~1.5m,应在主操作员的位置进行测试。
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