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- The orientation structure of the polyacrylonitrile precursors was quantitatively studied by the sound velocity method and the wide angle X-ray diffraction. 采用声速法及X射线衍射法对不同拉伸倍数聚丙烯腈原丝的取向结构进行研究。
- HRTEM Microstructural Evolution of Polyacrylonitrile Precursor Fiber during Thermal Stabilization Process 聚丙烯腈原丝在预氧化过程中的HRTEM组织演变
- polyacrylonitrile precursor 聚丙烯腈原丝
- The precursor of the modern car was a horseless carriage with a petrol engine. 现代汽车的前身是不用马拉的，装有汽油发动机的车子。
- Polyacrylonitrile is insoluble in acrylonitrile. 聚丙烯腈不溶于丙烯腈。
- Thefirst telephone was the precursor of modern communications networks. 最早出现的电话是现代通讯网的雏型。
- The precursor or stem cell of a plasma cell. 成浆细胞浆细胞的前体细胞或干细胞
- The high quality of polyacrylonitrile (PAN) precursor fibers is a significant prerequisite for obtaining carbon fibers with excellent performance. 高质量的聚丙烯腈(PAN)原丝是生产高性能聚丙烯腈基碳纤维的前提条件。
- A precursor cell of a melanocyte or melanophore. 成黑素细胞产生黑素细胞的母体细胞
- Error is often the precursor of what is correct. 错误常常是正确的先导。
- The precursor or stem cell of a plasmacell. 成浆细胞浆细胞的前体细胞或干细胞。
- An originator of a line of descent;a precursor. 前辈家族血脉的开始者；先驱
- An originator of a line of descent; a precursor. 前辈家族血脉的开始者;先驱。
- A severe cold may be the precursor of pneumonia. 重伤风可能是急性肺炎的先兆。
- Lysine is a precursor of certain alkaloids. 赖氨酸是某些生物碱的前体。
- The first ribin us a precursor of spring. 头一只知更鸟是春天的先兆。
- ARJ21 is seen as the precursor to a jumbo jet. ARJ21型飞机被看作是大型喷气式飞机的前身。
- Her precursor as school principal was an eminent educator. 她任校长前是一位卓越的教育家。
- Crazing is the invariable precursor of brittle fracture. 出现小裂纹必然是脆性断裂的前兆。
- polyacrylonitrile precursors 聚丙烯腈原丝
