It was investigated that the radon concentrations in bone-coal mining areas, in outside and inside BCCB houses and ordinary red-brick (ORB) houses of the refere
During 1991-1993,the activity levels of the bone-coal mines were investigated in Zhejiang,Hubei,Hunan,Jiangxi and Anhui Province,respectively,where the reserve
Mo ions extracted from a metal vapor vacuum arc ion source (MEVVA) were implanted into 4Cr5MoV1Si(H13) steel samples with a high implantation dose of 5×101