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噪声评价值
tech.
エヌ•アール•エヌ
;
NR数
(エヌ•アールすう)
;
NR値
(エヌ•アールち)
;
NC値
(エヌ•シーち)
噪声评价值
:
3 phrases
in 1 subject
Technology
3
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