通用从1957年开始销售聚碳酸酯以逐步取代玻璃和金属，它的应用非常广泛，从电子咖啡机到超音速飞行器的表面材料。
GE began selling Lexan in 1957. A potential replacement for glass and metal, it was used for everything from electric coffeemakers to the light covers on the wings of supersonic aircraft.
研究了有动力通用再入飞行器的燃料最优巡航轨迹，将问题转化为求解最优稳态巡航轨迹和最优周期巡航轨迹问题。
The fuel optimal cruise trajectory of a powered common aero vehicle was analyzed. The problem was divided into determining the optimal steady-state cruise and optimal periodic cruise problems.
“这更像是飞行器技术的生产线，而不是传统的点焊钢铁车身，”通用汽车中国制造部门主管保罗·布托(Paul Buetow)一边沿着流水线走动一边说。
"It's more along the lines of aircraft technology than traditional, spot-welded steel bodies," said Paul Buetow, G. M. 's head of manufacturing in China, as he strode along the assembly line.
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