實(shí)際要用的項(xiàng)數(shù)的多少取決于收斂的快慢程度.The number of terms actually used depends upon the rapidity of the convergence.它的大小表明經(jīng)濟(jì)效益水平提高的快慢程度.Its size indicates the speed rate that economic benefits level raises.物體的速度所表示的,只是物體運(yùn)動(dòng)的快慢.It is only...