从最简单的可行设计入手。

Start out with the simplest feasible design.

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并用PC—1500计算机绘出了可行设计域及目标函数的等高线，确定出优化解。

Variation diagrams in domains of feasible design and contour lines of optimization objective functions are drawn by means of PC-1500 computer. Obtaining optimum solution.

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18世纪晚期，詹姆斯·瓦特设计了一种高效的、商业上可行的蒸汽机，随着它的使用成本越来越低，它很快被应用于各种工业用途。

In the late 1700s James Watt designed an efficient and commercially viable steam engine that was soon applied to a variety of industrial uses as it became cheaper to use.

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