用于滤袋的PPS空气变形丝，其性能和纱线结构形态的变化主要依赖于高分子结构、聚集态结构和加工过程中条件的控制。

The PPS air textured yarn with filter bag, yarn structure, performance and morphological changes depends on the polymer structure, aggregate structure and control of processing conditions.

youdao

We'll talk about some chemistry today, what DNA molecules are like, why they have the behavior that they do, and you need to understand this in order to understand how you manipulate DNA.

今天我们会谈到一些化学结构,比如DNA分子的形态,它们为什么会以这种形态存在,你必须先掌握这些,才能理解如何操控DNA

耶鲁公开课 - 生物医学工程探索课程节选