This model - an exact copy of the worn area - was sectioned and photographed.
这个模型——磨损部位的精确复制——被切割并且拍照。
After improvement, the spectral area is equal to 1, the values of spectrum and slope are continuance on the sectioned point.
经过改进后可使谱面积等于1，且在分段处谱值及斜率均连续。
After improvement, the spectral area is equal to 1, the values of spectrum and slope are continuance on the sectioned point.
经过改进后可使谱面积等于1，且在分段处谱值及斜率均连续。
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