ICLE 发表于 2025-3-26 23:21:24
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http://reply.papertrans.cn/28/2710/270989/270989_33.pngaesthetic 发表于 2025-3-27 09:45:45
Lignin as a Raw Material for Carbon Fibre, a carbon content of more than 60%. Furthermore, it is available in large quantities; possible to isolate and eventually modify, and still obtainable as a relatively cost-competitive raw material, as compared with PAN. Cost estimations for lignin as precursor shows potential of a remarkably cost redMortar 发表于 2025-3-27 16:40:58
http://reply.papertrans.cn/28/2710/270989/270989_35.png泰然自若 发表于 2025-3-27 19:57:41
Introduction,s, and catastrophes are greatly increased because of a great number of new agents, in particular, the demographic explosion, better health conditions than in the past, the urbanization process, postindustrial dynamics at political as well as economic levels, new life styles, and, as a consequence, t