Based on the production practice, the mathematical model of the optimum stock of raw materials in paper making enterprises and its application are introduced with copper plate paper as an example.
根据生产实践经验，以铜版纸生产为例，介绍了造纸企业生产原料最佳库存量的数学模型及其应用。
In copper engravings and etchings, the impression caused by the edges of the plate is clearly visible on the paper.
铜版画、雕刻，造成这样的印象是优势明显的板块文件。
The utility model relates to an epoxy paper glass cloth double-faced copper-clad plate, which is applied to the basic materials of different electronic devices, instruments and circuit boards.
本实用新型涉及一种环氧纸玻璃布双面覆铜板，用于各种电子设置、仪器仪表、电路板的基础材料。
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