讨论了上述几种方法的使用条件及所受限制，并比较了在某些情况下各自的最大视角。

The best position of the mirrors and the possible biggest view angle of the hologram is studied and the relative formulas are given. Requirements an…

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为了通过调查获得最大的收获，可以添加一些问题，从而更深入地了解用户的视角；但是，必须考虑到花费的时间和精力，不要添加过多问题。

To get the most out of the surveys, you can add more questions to gain more insight into the users' points of view; however, you must balance this addition with the time and effort expended.

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这些投票通常由学术机构或媒体举办，从中能看出这一年中对人们影响最大的活动或事件，不失为一种有趣的视角。

The polls, normally organized by academics or the media, are an interesting way of determining which events or incidents have affected the people most in a calendar year.

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