Research on Laboratory Testing Features of Chemical Vapor Deposition in Overgrowth Diamonds oleh TANG Shi, SU Jun, LU Tai-jin, MA Yong-wang, KE Jie, SONG Zhong-hua, ZHANG Jun, ZHANG Xiao-yu, DAI Hui-ru, LI Hai-bo, ZHANG Jian, WU Xu-xu, LIU Hou-xiang