nl网站宣传工具不仅提供了有关分析关键词密度和位置的信息，也提供了有关搜索引擎如何为页面定级的信息。
Ranks.nl Web Site Promotion Tools. Provides information on analyzing keyword density and placement and on how various search engines rank your pages.
高密度关键词(同一个关键词在你的文章中出现的次数)不再是搜索排名的关键性因素了。
High keyword density (the number of times a keyword appears in your content) is no longer a deciding factor in search ranking.
密度很重要，比如每五个词中有两个关键词比每十五个词中两个关键词要有效。
Density is important; i.e. 2 keywords for every 5 words counts more than 2 for every 15.
另一方面，也不要让文章显得太长，因为这将不利于你保持关键词的密度，文章看上去也缺少紧凑。
On the other hand, does not seem to make the article too long, because it will not help you keep your keyword density, the article looked a lack of tight.
不管确切密度你选择它是重要的是将关键词，以便有更多的开始和结束时产生一个小时玻璃效果。
No matter what exact density you choose, it is important to place keywords so that there are more at the beginning and end to produce an hour glass effect.
不管确切密度你选择它是重要的是将关键词，以便有更多的开始和结束时产生一个小时玻璃效果。
No matter what exact density you choose, it is important to place keywords so that there are more at the beginning and end to produce an hour glass effect.
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