WU Zunhong1
; XU Yi1; TAN Kai1 ; LI Changsheng1 ; WANG Yuanbing2 ; CAI Zibiao2 ; LI Xiaoping2 ; YANG Lin2 ; ZHANG Wei21.National Centerfor Quality Supervision and Inspection of Nondestructive Testing Equipment for Industrial Digital Imaging(Hubei) ,Hubei Special Equipment Insepction and Testing Institue, Wuhan 430071,China; 2.Jouleyacht Technology Co.Ltd., Wuhan 430071,China