GB/T 6881-2023
声学 声压法测定噪声源声功率级和声能量级 混响室精密法
Acoustics—Determination of sound power levels and sound energy levels of noise sources using sound pressure—Precision methods for reverberation test rooms
- 实施日期
- 2024-04-01
- ICS 分类
- 17.140
组合使用关键词、标准类型、状态与 ICS 分类,快速定位所需国家标准。
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GB/T 6881-2023
Acoustics—Determination of sound power levels and sound energy levels of noise sources using sound pressure—Precision methods for reverberation test rooms
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Colorimetry—Part 3:CIE tristimulus values
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Electrostatics—Part 4-8: Standard test methods for specific applications—Electrostatic discharge shielding bags
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Electrostatics—Part 2-1: Measurement methods—Ability of materials and products to dissipate static electric charge
GB/T 25922-2023
Measurement of fluid flow in closed conduits—Flowrate measurement by means of vortex shedding flowmeters inserted in circular cross-section conduits running full
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Measurement of fluid flow in closed conduits—Guidance for the use of electromagnetic flowmeters
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Electrostatics—Part 5-1: Protection of electronic devices from electrostatic phenomena—General requirements
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Electroacoustics—Sound level meters—Part 2: Pattern evaluation tests
GB/T 3785.1-2023
Electroacoustics—Sound level meters—Part 1: Specifications
GB/T 42553-2023
Electroacoustics—Methods to determine corrections to obtain the free-field response of a sound level meter
GB/T 42719-2023
Measurement method for fractional voltage of planar materials
GB/T 42741-2023
Measuring method for electromagnetic parameters of solid materials using air-freespace
GB/T 42714-2023
General specification for electromagnetic shielding heat-shrinkable tubes
GB/T 42718-2023
General technical requirements for electro-conductive material-over-foam gasket