Funding for this research was provided by:
National Natural Science Foundation of China (61733012, 61703303)
Natural Science Foundation of Tianjin City (17JCQNJC04100)
State Key Laboratory of Precision Measuring Technology and Instruments (PILAB1705)
Research project of Tianjin Municipal Education Committee (2017KJ086)
Article History
Received: 31 May 2019
Revised: 21 November 2019
Accepted: 25 December 2019
First Online: 14 January 2020