Cart:
| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 4854.1-2004 |
Acoustics--Reference zero for the calibration of audiometric equipment--Part1:Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones 声学 校准测听设备的基准零级 第1部分:压耳式耳机纯音基准等效阈声压级 |
China National Standards Part1:Reference |
 English PDF |
| Find out:1Items | To Page of: First -Previous-Next -Last | 1 |
+86-755-25831330
