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测定平均粒度的标准试验方法

Standard Test Methods for Determining Average Grain Size

测定平均晶粒度的标准试验方法

Standard Test Methods for Determining Average Grain Size

声学.利用声压的噪声源声功率级和声能级的测定.专用混响现场内小型可移动声源的工程方法.硬质围墙试验室用对比法

Acoustics. Determination of sound power levels and sound energy levels of noise sources using sound pressure. Engineering methods for small movable sources in reverberant fields. Comparison method for a hard-walled test room

碳质材料的试验 通过比较方法测定室温导热率 固体材料

Testing of carbonaceous materials - Determination of thermal conductivity at room temperature by means of a comparative method - Solid material

炭素材料试验.用比较法测定室温导热率.固体物质

Testing of carbon materials - Determination of thermal conductivity at room temperature by means of a comparative method - Solid material

家用和类似用途电器 测定空气传播噪声的试验规范 第1部分：一般要求（IEC 60704-1:1997）；德文版 EN 60704-1:1997

Household and similar electrical appliances – Test code for the determination of airborne acoustic noise – Part 1: General requirements (IEC 60704-1:1997); German version EN 60704-1:1997

气体分析 标准混合气体组成的测定 比较法

Gas analysis－Determination of composition of calibration gas mixtures－Comparison methods

气体分析.校准混合气组成的测定和校验.比较法

Gas analysis.Comparison methods for determining and checking the composition of calibration gas mixtures

铂铑热电偶细丝的热电动势测量方法

The test method of thermo-emf for platinum

气体分析 测量过程及结果 校准技术要求

Gas analysis—Measurement procedure and result—Technical requirements for calibration

金属平均晶粒度测定方法

Determination of estimating the average grain size of metal

家用和类似用途的电器.空气中传播的噪声的测定方法.第1部分.一般要求

Household and similar electrical appliances. Test code for determination of airborne noise. Part 1. General requirements

铜及其合金 平均晶粒度估算方法

Copper and copper alloys. Test methods for estimation of average grain size.

空调风机噪声声功率级测定—混响室法

Reverberant room method for sound power level testing of ventilators

气体标准物质研制（生产）通用 技术要求

General Technical Requirements for Producing Gas Reference Materials

测量传声器 第8部分：通过与工作标准传声器比较测定自由场灵敏度的方法 (IEC 61094-8:2012)

Measurement microphones — Part 8: Methods for determining the free-field sensitivity of working standard microphones by comparison (IEC 61094-8:2012)