abbr. Noise Load Ratio 
声负载比
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hypersonics, hypersonicsound, hypersorber, hypersorption, hyperspace, hyperspasmia, hyperspatial, hyperspecialization, hyperspeed, hypersphere,
相似单词
NLLST, NLM, NLOS, NLP, NLQ, NLR, NLRA, NLRB, NLS, nlsfunc,