The infinite series diverges, meaning that its sequence of partial sums does not tend towards any finite limit.Equivalently, one says that lacks a sum. 此无穷级数发散,即其部分和的序列不会趋近于任一有穷极限,可等价地认为不存在和。
Up to a certain sum of the interior angles on one side of the transversal the two lines might indeed meet. 截线一侧两内角到达一定的和数,两直线可能一定相交。
The greater the sum, the greater the cross-correlation coefficient obtained in this way will be. 和数越大,以这种形式得到的相关系数也越大。