Disinfection Modeling Study for the Owen Sound Water Distribution System: Using WaterCAD by Haestad Methods
Owen Sound配水系统的消毒建模研究:通过Haestad方法使用WaterCAD
2001-06-01
JJG 176-2022
声校准器检定规程
Sound Calibrators
2022-04-29
JJF 1853-2020
声强校准器校准规范
Calibration Specification for Sound Intensity Calibrators