backward pig发育不良的仔猪
backwardadj.向后的;落后的adv.向后
backward condition probability后向条件概率
Backward propagation algorithm反向传播算法
backward extrusion punch shape反挤压凸模形状
backward elimination procedure反向淘汰法
backward wave oscillating tube回波振荡管
backward differentition method[计] 后向差分法
backward of countryside novels乡土作品的停滞
backward recursive probability后向递归概率
backward-sloping supply curve向后倾斜供给曲线