在对象模型中,根据每个产品项重新计算总价格是完全合理的。
In an object model, it is perfectly valid to re-compute the total from the item lines.
看,这是物理学中的一种标准方式——首先通过一些计算来近似地得到粗略的结果,然后物理学家再根据给出的物理系统的行为方式来逐步完善这个模型。
Then physicists can refine the model bit by bit, according to how given physical systems are known to behave.
根据计算机模型得出的结果,这种设计可以让风力发电厂效率提高数百倍,下一步就是研究人员的现场测试,看“鱼儿”在陆地上的“游动”。
According to the computer model, this design could increase wind farm efficiency a hundredfold. The next step for the researchers is to do a field test, trying out these fish dynamics on dry land.
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