Economies of scale These result in the company benefiting from a reduction in the average cost per unit.
规模经济—这些使公司由于降低单元平均成本而受益其中。
Equipments random inventory management strategy and relevant factors include ordering cost, storage cost, average cost per unit time, probability of no shortage of spare parts, and decision models.
器材随机库存管理控制策略及其有关因素包括:订货费用、存贮费用、单位时间内备件的平均费用、不缺备件概率及决策模型。
It is based on a database of past PDC bits. In the databased, it includes bit type, average shear stress of well which bit was used in, cost per unit length.
该方法以一个建成的PD C钻头使用资料库为基础,该数据库包括钻头型号、所钻井段地层的平均剪切强度、单位进尺钻井成本等指标。
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