While dupont provided nylon ( among other things ) to the u. s.military for parachutes and tires , its research department studied how to make stockings on the cheap and did work that eventually led to orlon and lycra .

杜邦为美军的降落伞和轮胎提供了大量尼龙和其它物资，同时其研发部门开始研究怎样生产便宜的物资，最后发明了orlon和lycra两种布料。