As for the problems of optimal design on mechanical products, it is quite difficult to make a correct decision in the stage of scheme design due to too many involved factors.
对于机械产品优化设计问题，由于涉及因素较多，在方案设计阶段很难作出正确决策。
As for the problems of optimal design on mechanical products, it is quite difficult to make a correct decision in the stage of scheme design due to too many involved factors.
对于机械产品优化设计问题，由于涉及因素较多，在方案设计阶段很难作出正确决策。
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