本文主要运用了三种研究方法。

The paper uses three main research methods.

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为此本文主要运用价值分析法，实证分析法和经济分析法等方法进行研究。

The thesis applies value analysis method, actual evidence method, economy analysis method to study.

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本文的证明主要运用了山路引理。

The main method is Mountain pass Lemma.

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本文在研究中主要运用了两种办法。

In this paper, in the main study used two methods.

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本文在研究中主要运用了两种办法。

In this paper, in the main study used two methods.

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