By means of cyanoethylation and chlorination,wood sawdust was converted into thermoplastic material and then compounded with short sisal fibers.
通

基化反应,使木粉转化成为热塑性材料,再与短切剑麻纤维混合,热
制得植物纤维增强塑化植物纤维基复合材料。
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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

现,在
些卫
件更好、洗涤更频繁、氯化处理更多、化学物质更丰富、微
物相对较少的
达国家,自身免疫性疾病的
病率较高,相比之下,在卫
件较差的
展中国家,这一现象则不
么明显。