倒置法は言葉の前後を入れ替えることにより文章を強調する効果があります。

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Inversion has the effect of emphasizing a sentence by rearranging the order of words.

Literal

Inversion [topic-は] words [possessive-の] front-and-back [object-を] swap [by-ことにより] sentence [object-を] emphasize effect [subject-が] exists.

倒置法 'inversion' is a literary/grammatical term. ことにより 'by means of doing' is a formal nominalizer + により (formal 'by'). The sentence itself is a dry grammar textbook definition, explaining the rhetorical device of inversion. Ironically, it's written in perfectly standard word order.