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GB standards are the China national standards; Prefix code GB are Mandatory standards, GB/T are Recommended standards; All products or service must be compliance with GB standards; If you want to export products or services to huge Chinese market, need ensure they are meet the requirements of GB china national standards; We provide Chinese GB standards and English version GB standards Lookup, Translate, Download, Imported Commodity GB standards Testing and Compliance review services. |
| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 32524.2-2016 |
Acoustics—Determination of sound power level and directivity character of power capacitor using sound pressure—Part 2: Engineering methods for an essentially free field over a reflecting plane 声学 声压法测定电力电容器单元的声功率级和指向特性 第2部分：反射面上方近似自由场的工程法 |
China National Standards directivity |
 English PDF |
| GB/T 32524.1-2016 |
Acoustics—Determination of sound power level and directivity character of power capacitor unit using sound pressure—Part 1: Precision method for hemi-anechoic rooms 声学 声压法测定电力电容器单元的声功率级和指向特性 第1部分：半消声室精密法 |
China National Standards directivity |
English PDF |
| GB/T 18311.20-2007 |
Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-20: Examinations and measurements - directivity of fibre optic branching devices 纤维光学互连器件和无源器件 基本试验和测量程序 第3-20部分：检查和测量 纤维光学分路器件的方向性 |
China National Standards directivity |
English PDF |
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