acceleration running noise level
distribution of environmental noise level
maximum allowable noise level
noise level
噪声水平
杂讯位准
噪音等级
噪音程度
噪声电平
噪音水准
噪音电平
噪声等级
噪声位准
噪音级别
干扰水平
噪声强度
杂波水平
噪声频率
噪声功率
噪音标准
噪音声级
噪声级
噪声位
噪音级
噪音遮蔽
声压级
噪声值
音准
噪声
声级
噪音
noise level improvement program
noise level of atmospherics
scale noise level estimation
Eliminating noise method of measuring of simulated noise
coupling mechanism between upper level and low level jet
fiscal system at county level and township level
interaction between upper level and lower level