回: circle; wind代: take the place of; be in pla ...系数: coefficient; ratio; modulus; ...回代: back su titution; back substitution; inverse calculation撤回代表: recall a representative revoke第二代系统: second-generation第四代系统: fourth-generation system返回代码: return code回代过程: backward steps双重回代: double back substitution; double back-substitution触视替代系统: tactile-vision substitution system返回代码 返回码: returncode现代系统理论: modern system theory; modern systems theory金刚新世代系列: new generation替代系统常驻设备: alternate system residence device替代系统装置(磁)盘: alternate installation disk系数: [数学] coefficient; ratio; modulus; quotient; factor 安全系数 coefficient of safety; 光学系数 optical coefficient 递归法 循环消去回代法: recursivemethod异种代换,异源替代系,异代换系: alien substitution返回代码寄存器 返回码寄存器: returncoderegisterbeta系数: beta coefficientk系数: k factor; k-factorq系数: q quotientα系数: alpha coefficientβ系数: beta coefficient