A two-factor authentication system has been replaced by a three-factor system which is more secure but less convenient.
双重认证变成了三重认证，虽然提高了安全性，但却更不方便了。
2
This paper assesses and analyses disaster degree of flood -waterlogging disaster by use of three-factor influence assessment method.
运用三因子联立评估法，评定了洞庭湖区洪灾、涝灾和洪涝灾的灾度，进行了相应的分析；
3
This paper introduced a three-factor authentication mode of network payment which added an authentication code factor on the basis of the traditional dual-factor authentication.