Measurement method of the standard volume of bell provers
LIU Chenkui, QU Hongqiang, CHEN Shiyan, NIU Lina, XING Jingfang
Journal of Hebei University (Natural Science Edition) . 2019, (5): 459 -465 .  DOI: 10.3969/j.issn.1000-1565.2019.05.003