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98 ʱ䣺2019-04-26
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ΪͳһϼڶƶһЩı׼Щ׼в涨ķҲ涨ҪʹƵļҪ󣬿ɸЩ׼Աõѡʵ
1ѧ—
ɰGB3222-94ѧҪֵLALAeq LNL5L10L50L90L95LdLnҪΪ2ϻƼԶܷGB3785 硢ܼĹ涨
ɰGB/T14623-93򻷾ҪֵLA LAeqLNL10L50L90LdLnҪΪ2ϻƼԶܷGB3785Ƶ硢 ܼĹ涨
3ҵҵ
ɰGB12349-90ҵҵҪֵLALAeqҪΪ2ƼԶܷGB3785Ƶ硢ܼĹ涨
ɰGB12524-90ʩҪֵLAeqҪΪ2ϻƼԶ̬ΧС50dBܷGB3785Ƶ硢ܼĹ涨
5
ɰGB/T14365-93ѧҪֵAȨ“”ѹLpҪ1ͻ2ƣܷGB3785Ƶ硢ܼĹ涨
ɰGB/T5111-95ѧ·ҪֵLPAF ɽƵ׷ҪΪ2ϻƼԶܷGB3785Ƶ硢ܼĹ涨 7ںӺ
ɰGB/T4964-85ںӺۿڴIJҪֵAȨ“”ѹLpAȨ“”ѹLp,Ҫ1ͻ2ƣܷGB3785Ƶ硢ܼĹ涨
ɰGB9661-88ΧɻҪֵAȨ“”ѹLpɻЧоLepnҪ2ƼԶܷGB3785Ƶ硢ܼĹ涨
9Դʼ
ɰGB/T16538-96ѧѹⶨԴʼʹñ׼Դ׷ʹGB3785й涨2ͻ2ϵ봫֮ʹ»
10񶯲
ɰGB10071-88򻷾񶯲ҪVALVLVLZVLZNӦISO/DP8041-84й涨ڲ񶯵
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