发射总重量的评价准则综合考虑了系统质量和阻力面积，能够全面反映系统的经济性能，可以得到很好的优化结果。
The results indicated that total launched weight is a effective assessing criterion which can combine both system mass and resistance area into a unified criterion.
较少的表面面积意味着较少的阻力，相应地提高了燃油效率。
Less surface area means less drag, and less drag means more fuel efficiency. Kevin hand.
降低粘性土壤对刀齿表面接触面积可以减小土壤对刀齿的粘附和降低刀齿切削土壤的阻力。
Reduction of contact area between cohesive soil and the surface of dredging tools is able to decrease soil adhesion and cutting resistance.
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