Extent X-ray absorption fine structure 扩展边精细结构
x-extent 轴宽
extent x
程度上x
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The results of X-ray and infra-red imaging are being collated and studied to see the extent to which Gainsborough's painting was modified.
BBC: Thomas Gainsborough portrait 're-worked by rival'
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