His main contribution is in the development of artificial materials—nylons (synthetic polymer fiber).
His main contribution is in the development of artificial materials—nylons (synthetic polymer fiber).
主要贡献在于人造材料的研发--尼龙(合成的聚合纤维)。
His main contribution is in the development of artificial materials—nylons (synthetic polymer fiber).
主要贡献在于人造材料的研发--尼龙(合成的聚合纤维)。