The drawbacks of conventional pretreatment process for cotton are long process line, large scouring loss and large mass consumption.
传统的纯棉绞纱前处理工艺存在工艺流程长、煮损率大、物料消耗大等缺点。
There are scouring abrasion and impact wear two basic types. The microstructure of two kinds of metal loss in process of wear and tear is not exactly the same.
有冲刷磨损和撞击磨损两种基本类型。两种磨损的金属流失过程的微观形态是不完全相同的。
The soil and water loss violently, the main reason was human's destroy on natural vegetation, thus it thoroughly destroyed the permeability and anti-scouring of soil.
目前黄土高原水土流失剧烈进行，其主要原因就是人为活动对天然植被的无情破坏，从根本上破坏了土壤的入渗和抗冲性能。
The soil and water loss violently, the main reason was human's destroy on natural vegetation, thus it thoroughly destroyed the permeability and anti-scouring of soil.
目前黄土高原水土流失剧烈进行，其主要原因就是人为活动对天然植被的无情破坏，从根本上破坏了土壤的入渗和抗冲性能。
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