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噪音级 [zào yīn jí]
[声][环境] noise level
- 2002年以来的八年间，中国购买了12艘基洛级潜艇，这对其自有的大噪音的明级和R级潜艇而言是一次很大的提升。
In the eight years to 2002 China bought 12 Russian Kilo-class submarines, a big improvement on its own noisy Ming- and Romeo-class boats. - 在截至于2002年的八年时间内，中国共购买了12艘俄罗斯的基洛级潜艇，这种潜艇比中国自己建造的“明”级和“罗密欧”级潜艇噪音小得多，性能得到了极大提升。
In the eight years to 2002 China bought 12 Russian Kilo-class submarines, a big improvement on its own noisy Ming- and Romeo-class boats. - C-5M是首架也是唯一一架满足噪音4级标准的军用飞机，也有助于其继续在全球对噪音级别较为敏感的机场起降。
The C-5M is the first and only military aircraft to achieve Stage 4 noise compliance, enabling continued access to airfields in noise sensitive communities throughout the world.
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