以下为句子列表：
英文: Porous formtion mechanism was additional discussed, and it was considered that micro-fibrils were pulled out of the ribbon-like crystallines of PTFE resin particles while nodes were the agglomeration of un-stretching PTFE particles.
中文: 另外探讨了微孔膜形成机理，认为纤维是从带状结晶的树脂颗粒中被拉出的，而结点是未被拉伸的树脂聚集在一起形成的。
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