Articles for you to add new keywords will be conducive to search engine "spiders" crawling the article index, thereby increasing the quality of the site.
为你的文章增加新的关键词将有利于搜索引擎的“蜘蛛”爬行文章索引，从而增加网站的质量。
Site index is not only the quantity reflection of the of site quality of different species, but the important basis of forestry management and harvest.
地位指数是立地质量相对于具体树种的数量化反映，也是森林经营和收获预估的重要依据。
Depending on the relationship between height (H) and diameter (D) of dominant trees, it takes the height of the dominant achieved at base diameter as the index of site quality estimation.
试图从优势木树高与胸径的相关关系入手，以优势木在标准胸径时所达到的树高作为评估地位质量的指标。
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