Computer simulations that take all of these factors into account could lead to improved designs for folding bikes with small wheels or bikes that carry cargo, Ruina says.
计算机模拟能把这些因素进行综合考量。这能改进设计出可折叠或是能拉货的自行车。
2
Batteries can account for over 10 per cent of the 45kg to 70kg of equipment that infantry currently carry.
电池占用了目前士兵携带的45 kg到70 kg设备的超过10%的重量。
3
On really long flights, fuel can account for 40% of a plane's take-off weight, so that around 20% of the fuel is used tocarry the rest of the fuel.