面向签名防伪的新型数字笔设计 关键词:数字笔;特征识别;力测量 [gap=1167]Keywords: digital pen; verification; force measurement
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?数字电笔
...一批原材料来料不良 ? A group of incoming raw material adverse 数字电笔 ? digital pen 如果你还没走远,我定将好好珍惜 ? If you are still not far off and I will certainly treasure ..