为了降低某水下航行装置的辐射噪声，增强其探测目标的能力，对该装置的重要噪声源——传动齿轮箱进行了减振降噪的试验研究。
An investigation was made on the main noise source-the gearbox of the underwater vehicle to reduce the noise and improve its capability of goal-detecting under the water.
设计并安装了专用的齿轮箱试验台，并在台架上进行了模拟发动机与螺旋桨扭振激励状况下的试验。
A special gearbox test device was made to simulate the excitation of the engine and the propeller.
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