中翻英!不要机译谢谢实际上,本文在对成本进行优化的过程中,也考虑到重量的因素,即在重量尽可能轻的情况下要求成本最低,实际

In fact,the text also consider the factor of weight though the optimization process to the cost.That means the cost is required to be lowest in the case of the weight is as light as possible.Factly it is a question of multi-objectives optimization.
自己翻译的哦.