求翻译：首先要确定电动汽车的行驶工况，根据动力性能指标和部件自身的技术发展水平初步确定电驱动系统的部件性能要求，在工况分析的基础上，提出整车性能指标。是什么意思？

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First of all to make sure the car's driving performance, based on performance indicators and part of their initial level of technological development of the electric drive system components and performance requirements on the performance analysis on the basis of overall vehicle performance indicator

First must determine the electric automobile the travel operating mode, according to the power performance index and the part own state-of-art preliminary determination power driven system part performance requirement, in the operating mode analysis foundation, proposes the entire vehicle performanc

First of all to determine the electric vehicle driving cycles, based on performance indicators and part development level of their technical performance requirements for preliminary determination of electric drive system parts, in working condition analysis based on proposed performance indicators.

正在翻译，请等待...