... 处理后数据 processed data 内部噪声水平 internal noise level 标准冲击 reference impulse ...
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internal receiver noise level 接收机内噪声电平
internal ratio receiver noise level 接收机内噪声电平
internal noise level
内部噪声级
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The key to reduce the internal noise level is that we should estimate the acoustic field accurately and then go on low noise optimization design to body structure during the course of designing.
降低车辆内部的噪声的关键是在设计阶段要准确预估车内声场特性进而对车身结构进行低噪声优化设计。
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