2. Stem erect or floating,
elongate, 5-angled, nodes often with adventitious roots.
茎直立或漂浮,拉长,5具角,节通常具不定根的。
3. The microstructure model to explain how PET filament self-
elongate and process condition of PET self-elongation filament were discussed.
探讨了PET纤维自伸长的微观结构运动模型和聚酯自伸长纤维的加工工艺条件。