他很灵活 发表于 2025-3-23 12:27:57
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Book 1982enchyma in the form of a commercial fibre? If it is possible, it is not easy. Although, for many purposes, plant fibres are being replaced by man-made fibres, vegetable fibres are still used, particularly in sacking and cordage and in some indus trial materials. Articles which must be examined in a保留 发表于 2025-3-24 07:23:36
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Hemp,nd as an animal feed. Oil extracted from the seed is a substitute for linseed oil in paint and varnish and is also used in soap-making. Like most plants of economic importance, hemp has frequently been studied by botanists. Its wide distribution, its varying form and its response to environment havearchaeology 发表于 2025-3-25 02:24:33
Sunn Hemp,t important commercially is C. . which is grown as a fibre crop. Most sunn hemp is grown in India where there are three main varieties, White, Genjan and Dewghuddy. The quality of the fibre is very variable.