Central to the concept of economies of scale is the idea that the best way to achieve high efficiency, and hence low unit costs, is through the mass production of a standardized output.
规模经济的中心思想就是为达到高效率从而降低单位成本，而进行的通过标准化批量生产所采用的最佳方法。
Because of its excellent part load efficiency, many compressor unit is used mainly in the occasions for large displacement in high pressure piston compressor applications.
由于其出色的部分负荷效率，多压缩机机组主要应用于的场合为大排量中高压活塞式空压机应用领域。
In this research of Calculation of spread dimensions of a cylindrical unit possessed symmetrical outline, a general program with high precision and efficiency is advanced.
本文对微机计算具有对称外轮廓曲线的圆简零件板金下料的展开尺寸进行了研究。提出了板金下料的通用程序，从而提高了下料尺寸的精度和效率。
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