... norm cost 定额成本 materials cost method 材料成本法 maintenance and repair cost 维修费用 ...
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direct materials cost method 直接材料成本法
This method can save materials, enhance efficiency and reduce cost. Based on this method, an efficient technic of melding and casting is related in this paper too.
这种方法可以节省材料，提高效率，降低成本，并在此基础上探讨了有效的熔炼和铸造工艺。
With characteristics of low cost and easy handling, the method is supposed to find wide application in quick quality evaluation of paddy materials.
所提出的方法具有成本低、样品用量少、快速便捷、效率高的特点，在品质改良稻米材料的快速筛选中具有良好的应用前景。
The invention makes it possible to develop a device which is used for drying capillary porous materials by using an acoustic thermal method and which is structurally simple and low-cost.
所 述发明使开发一种用于通过使用声热方法干燥毛细多孔材料的设备成为 可能，该设备结构简单且成本低廉。
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