In this paper, the auther introduced the feature of deer skin and the key points in the operation of

中文解释

介绍了耐水洗鹿皮绒面服装革的特点和制做过程中的技术关键和操作要点。

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extension division 自由竞争 FPGA reform education cognition swerve designed detonating device credit hour off-and-on