背景噪声NR值≤40dB(A)
北京(jīng)紅(hóng)星(xīng)之(zhī)友会(huì)所(suǒ)機(jī)房(fáng)降噪工程
•地(dì)點(diǎn):昌平區(qū)朝鳳北路(lù)•建设方:金(jīn)海(hǎi)華(北京(jīng))文(wén)化(huà)發(fà)展(zhǎn)有(yǒu)限公(gōng)司•完成(chéng)指标(biāo):背景噪声NR值≤40dB(A)•工期(qī):25天(tiān)
2021-06-14
EbRMz5SE
Qdmic
sTEGtHXp
Ivv8Bhv7zh
Ijv2ANE0
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•地(dì)點(diǎn):昌平區(qū)朝鳳北路(lù)•建设方:金(jīn)海(hǎi)華(北京(jīng))文(wén)化(huà)發(fà)展(zhǎn)有(yǒu)限公(gōng)司•完成(chéng)指标(biāo):背景噪声NR值≤40dB(A)•工期(qī):25天(tiān)
2021-06-14
EbRMz5SE
Qdmic
sTEGtHXp
Ivv8Bhv7zh
Ijv2ANE0
qj42te
FIjFVLYvB



