By means of cyanoethylation and chlorination,wood sawdust was converted into thermoplastic material and then compounded with short sisal fibers.
通过氰乙
化反应,使木粉转化成为热

料,再与短切剑麻
混合,热
制得植物
增强
化植物

复合
料。
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We still see high rates of autoimmune disease in countries where there are higher levels of sanitation, there's more washing, there's more chlorination, there are more chemicals, there are fewer microbes compared to less developed countries.
我们依然发现,在
些卫生条件
好、洗

繁、氯化处理
多、化学物质
丰富、微生物相对较少的发达国家,自身免疫性疾病的发病率较高,相比之下,在卫生条件较差的发展中国家,这一现象则不
么明显。