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船舶机舱噪声高达A声级100dB以上,而且,机舱本身是多个复杂声源,在封闭的金属硬反射空间内是一个混响声场,见图1.
Ship cabin noise up to A sound level more than 100dB, moreover, the cabin itself is a complex source of sound, in a closed metal hard reflectivity space is a reverberant sound field, see Figure 1.