2Zhang Z.A flexible new technique for camera calibration[ J ].IEEE Transa- ctions on Pattern Analysis and Machine Intelligence, 2000,22 (11 ): 1330-1334.
3Song L M,Wang M P,Lu L,et al. High precision camera calibration in vision measurement[J].Optics & Laser Technology, 2007,39(7):1413- 1420.
4Menzler F,Haubold A D,Hwang N H.Dynamic characterization of a new accelerated heart valve tester[J].Asaio Journal,1997,43 (5):M372-M377.
5Botros K K.Spring stiffness selection criteria for nozzle check valves employed in compressor stations[J].Journal of Engineering for Gas Turbines and Power,2011,133 (12):1-11.
6Sibilla S,Gallati M.Hydrodynamic characterization of a nozzle check valve by numerical simulation[J].Journal of Fluids Engineering,2008,130(12):1-12.
7Song Xueguan,Wang Lin,Part Y C.Transient analysis of a spring-loaded pressure safety valve using computational fluid dynamics[J].Journal of Pressure Vessel Technology,2010,132(5):1-6.
8Han Xu,Zheng Mingguang,Yu Yiqi.Hydrodynamic characterization and optimization of contrapush check valve by numerical simulation[J].Annals of Nuclear Energy,2011,38(6):1427-1437.
