They will stay with the product, part of the time at the customer site, all the way to GA.

他们会持续和产品在一起，部分时间在客户现场度过，一直到产品GA。

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And the GA optimization algorithm in product ergonomics form design is also illustrated by the case of wheelchair's backrest.

最后以轮椅靠背的曲面设计和优化为例，阐明了遗传算法在产品人机形态方面的设计和优化方法。

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