貌似楼主上传图片的分辨率没有达到杂志社的要求，作者指南见http://www.elsevier.com/journals ... 7/guide-for-authors，关于分辨率的要求如下：
EPS (or PDF): Vector drawings. Embed the font or save the text as 'graphics'.
TIFF (or JPG): Color or grayscale photographs (halftones): always use a minimum of 300 dpi.
TIFF (or JPG): Bitmapped line drawings: use a minimum of 1000 dpi.
TIFF (or JPG): Combinations bitmapped line/half-tone (color or grayscale): a minimum of 500 dpi is required.
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