间接接触引弧
Indirect contact striking
间接致电离粒子
indirectly ionizing particles
直接-间接跃迁
direct-indirect transition
转筒式直接-间接加热干燥机
direct-indirect heat cylindrical drier
环境致癌物
cancerogen in environment
亚硝胺致癌物
Nitrosamines carcinogenic compounds
Nitrosamines carcinogenic com pounds