The research on the consistency of the testing accuracy for smoke measuring equipment based on ionization chamber principleTing Ting Wang, Pei Zhang, Hong Zhang, Lei Lei Xie, Ya Jun Yan, Miao Miao Dai and Ya Yun WangMATEC Web Conf., 63 (2016) 01015DOI: https://doi.org/10.1051/matecconf/20166301015