产品总体方案评价与优选决策是产品设计过程中的重要步骤，它是决定总体设计之后进行详细设计的关键环节。
The evaluation and optimum selection for product outline schemes is a very important step from conceptual design stage to detail design stage.
因此，要提高产品的性能，应优化总体方案，协调性能参数，并提高传动系效率。
So, in order to improve the production performance, it should optimize collectivity scheme, correspond performance parameter and improve power train efficient.
为实现此总体方案，还给出了一些具体产品的选型建议。
To implement the overall scheme, some suggestion is given for the selecting types of some concrete products.
为实现此总体方案，还给出了一些具体产品的选型建议。
To implement the overall scheme, some suggestion is given for the selecting types of some concrete products.
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