The UPF of a textile fabric is determined by the chemical structure of its constituent fibres and by its structural characteristics.
纺织物的UPF值是由组份纤维的化学结构及织物的组织结构特性所决定的。
On account of its chemical structure and the spatial relations between the constituent molecular parts, it is capable of self-duplication, correct in every detail.
由于其化学结构和组成分子间的空间关系的缘故，它能精确地自我复制。
On account of its chemical structure and the spatial relations between the constituent molecular parts, it is capable of self-duplication, correct in every detail.
由于其化学结构和组成分子间的空间关系的缘故，它能精确地自我复制。
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