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来源:雅诚德英语网
NASA is exploring another noise-reducing technology - this one for helicopters - that is going through a process of discovery similar to that for the chevron.
NASA正在探索另一项减噪技术——用于直升机——该技术正在经由类似于chevrons的过程以期揭晓。
NASA is exploring another noise-reducing technology - this one for helicopters - that is going through a process of discovery similar to that for the chevron.
NASA正在探索另一项减噪技术——用于直升机——该技术正在经由类似于chevrons的过程以期揭晓。