所有字体小四双倍行距，图片放到最后，每个图占一页，摘要可以单独占一页

楼上的所得没错。这个是期刊主页上的详细要求（Guides for Authors）：
Article structure

Follow this order when typing manuscripts: Title, Authors, Affiliations, Abstract, Keywords, Main text, Acknowledgements, Appendix, References, Figure Captions and then Tables. Do not import figures into the text. Collate acknowledgements in a separate section at the end of the article and do not include them on the title page, as a footnote to the title or otherwise.

Research papers should be no more than 20 double line spaced manuscript pages, excluding tables and illustrations. In addition the total length should not exceed 30 pages with no more than 2 figures or tables per page. Short Communications should be no more than 10 double line spaced manuscript pages, including tables and illustrations.

Use double spacing and wide (3 cm) margins. (Avoid full justification, i.e., do not use a constant right-hand margin.) Ensure that each new paragraph is clearly indicated. Present tables and figure legends on separate pages at the end of the manuscript. If possible, consult a recent issue of the journal to become familiar with layout and conventions. Number all pages consecutively, use 12 or 10 pt font size and standard fonts，