Xov xwm tseeb
2026 GVDA Tshiab Tuaj Txog 3 Lens 10.1 Nti LCD Electron Digital Microscope, 2...
Jan 12, 2026
2025 GVDA Tsim Tshiab 4.3inch IPS HD Industrial Endoscope Tshuaj Ntsuam Xyuas...
Apr 28, 2025
2024 Tshiab Txog GVDA Portable 72W LED Teeb Cov Hlau Gd301 Hauv Cov Tshuag
Aug 08, 2024
Vim li cas kuv thiaj yuav xaiv GVDA GD139 roj cov detectors?
Apr 11, 2024
Tiv tauj peb
Tel: +8618822802390
E-mail: admin@gvda-instrument.com
WhatsApp: 8618822802390
Ntxiv: Chav 610-612, Huachuangda Lag Luam Tsev, Cheeb Tsam 46, Cuizhu Road, Xin'an Street, Bao'an, Shenzhen
Apr 02, 2021
A Frequency Weighting of Audio Level detector: "A" weighting: The frequency response of the meter is similar to the response of the human ear. "A" weighting is commonly used for environmentalor hearing conservation programs such as OSHA regulatory testing and noise ordinance law enforcement.
Most noise measurements are performed using "A" Weighting and FAST Response.
Koj Tseem Yuav Zoo Li
