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校准精度直接影响数据准确性。（如原点、最大值点），比对实际值与提取值的误差——如果误差超过1%，就需要重新校准或者检查图像是否存在变形。

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The software is designed to reverse-engineer plots when the original source data is unavailable. GetData Graph Digitizer - Informer Technologies, Inc. 27 Mar 2026 — getdata graph digitizer 226 key better

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