Noise is an important performance index for appraising gear unit.
噪声是评价齿轮装置性能的一项重要指标。
By the relevant authority testing unit test each index all surpasses the national standards.
经有关权威检验单位检测各项指标均超越国家标准。
By the relevant authority testing unit test each index all surpasses the national standards.
经有关权威检验单位检测各项指标均超越国家标准。
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