Since it is not possible to sum target fields into another target field, we need to sum and multiply the source Price fields into the target Amount field. The XPath expression looks like this.
因为不可能将目标字段的和作为另一个目标字段的值，所以我们需要求和，并乘以源price字段，作为目标amount字段的值。
And I will multiply the fruit of the tree, and the increase of the field, that ye shall receive no more reproach of famine among the heathen.
我必使树木多结果子，田地多出土产，好叫你们不再因饥荒受外邦人的讥诮。
Just as medicine has become a highly specialized field, the specialties for medical assistants continue to multiply.
正像医学已经变成了一个高度专业的领域，医疗助理的专业也变得多样化了。
You will easily multiply your results by learning the Secrets to successful Self-Promotion used by the most successful people in every field.
你会很容易繁殖的结果由各个领域最成功的人学习中的自我宣传之用成功的秘密。
The numerical simulation for the three dimensional turbulent flow field of multiply jets mixing with a confined crossflow in cylindrical duct is presented in this paper.
对多股射流与圆柱管中的横流湍流混合的三维流场进行了数值模拟。
Based on the solution of the diffracted wave field the general formulas for calculating dynamic stress concentration factor for a cavity of arbitrary shape in multiply-connected region are given.
基于绕射波场的解，文中给出了任意形状空腔动应力集中系数的一般算式。
Paddy field decreased in large acreage, yet aquafarm increased in multiply.
水田大面积减少．水产养殖用地成倍增加。
Paddy field decreased in large acreage, yet aquafarm increased in multiply.
水田大面积减少．水产养殖用地成倍增加。
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