对无级变速器速比的取值范围进行了计算，并按照质量集中法简化了传动系的模型。

The range of CVT ratio has been calculated and the drivetrain model has been simplified according to lumped mass method.

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他以法国视角集中谈了中法关系。

He focused on France's vision of Sino-French relations.

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他以法国视角集中谈了中法关系。

He focused on France's vision of Sino-French relations.

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