意识这一点使人们了解到，通过增加面向对等伙伴关系的一致性的分级或分层，可以取得可能最好的互操作性。

Recognizing this results in a realization that interoperability is likely best achieved through increased staging, or leveling, of conformance toward peer-to-peer partner relationships.

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项目的分级是这样的，及格分数为50%和70% +表示区分层次的工作。

The grading of projects is such that the pass mark is 50 per cent and 70 per cent + indicates distinction level work.

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本文提出了一种分段、分层、分级的递进优化方法，应用于汽油机工作过程的优化计算中，取得了较好的效果。

A segmented, layered and graded progressive optimization technique is introduced for the calculation in this paper and satisfying results are achieved.

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