Hu, Jiacheng, Ying Sha, Jinhui Cai, Ying Liu, and Suijun Liu. 2022. “Period Verification Device for Ventilation Rate Standard Rods Based on a Digital Thermal Flowmeter”. Metrology and Measurement Systems 29 (1):231-44. https://doi.org/10.24425/mms.2022.138543.