聚丙烯

As PAN contains a large amount of hydrophobic radicals,the polyacrylonitrile fiber has poor hydroscopic property and is easy to generate static,which not only affect the processing behavior of polyacrylonitrile fiber but also decrease the wear behavior of fabrics.

睛纶是合成纤维主要品种之一，有&合成羊毛&之称。由于原料聚丙烯睛中含有大量的疏水性基团，睛纶的吸湿性较差，极易产生静电。静电会导致纤维缠绕或堵塞机件，影响织造过程的顺利进行；静电荷在服装上积聚容易使穿着者产生不适感，降低了睛纶纺织品的服用性能。

Study on thermostable and salt-tolerant water-soluble polymers with super- high molecular weightChemical degradation of HPAM in aqueous solution and its influence factors werestudied. The oxidative degradation mechanism, including auto-oxidation and chainscission two processes, having longer kinetic chain length was established. Notably, inthe presence of the reductive impurities the oxidative degradation of HPAM inaqueous solution is remarkably accelerated.

2：线性超高分子量耐温抗盐水溶性聚合物的研究研究了部分水解聚丙烯酰胺水溶液中的化学降解作用及其影响因素，确立了它的氧化降解机制，包括自动氧化过程和链式裂解过程，具有较大的动力学链长，当有还原性杂质存在时，降解反应显著加速。

In this experiment, we made a comparison and analysis of peroxidase total activity and isozymes of Paulownia trees with and without witch's broom by using spectrophotometer and incontinuous polyacrylamide gel electrophoretic methods.

分别采用分光光度法和不连续聚丙烯酰胺凝胶盘状电泳法，比较分析了感病与未感病泡桐树木的过氧化物酶总活性与同工酶的变化。

The changes of peroxidase and phenylalanine ammonia lyase in several jujube cultivars inoculated with phytoplasmas were analyzed by using spectrophotometer and incontinuous polyacrymide electrophoretic methods.

采用分光光度计和不连续聚丙烯酰胺凝胶电泳，比较分析了不同枣树品种及株系接入病原植原体后，其过氧化物酶及同工酶和苯丙氨酸解氨酶的变化。

OBJECTIVE: To summarize the application of polypropylene repair material in treating inguinal hernia.

目的：总结近年聚丙烯材料在腹股沟疝治疗中的应用现状。

Objective To summarize the method and experience for treatment of inguinal hernia with polypropylene mesh.

目的 总结聚丙烯补片治疗腹股沟疝的方法和经验。

Thermal gravimetric analysis, FT-IR, Limited oxygen index and vertical firing test are used to research the flame retardancy of the intumescent flame retardant on PP.

采用热重分析、红外光谱分析、氧指数测定和垂直燃烧实验，研究了所合成的膨胀型阻燃剂对聚丙烯的阻燃作用。

S The role of zinc borate in intumescent flame retarded polypropylene was studied by limited oxygen index, thermal degradation analysis and scanning electron microscope.

通过氧指数、热重分析和扫描电子显微镜研究了硼酸锌在膨胀型阻燃聚丙烯中的协同阻燃作用。

It could be concluded that the corrosion resistance of PP plastics in itaconic acid aqueous solutions was quite good.

根据重量、外观及性能的情况，认为聚丙烯塑料在衣康酸介质中的耐腐蚀性良好。

The effect of the itaconic acid content in copolymers on the structure and properties of PAN precursors was investigated.

通过元素分析、IR、DSC、13C-NMR等手段，讨论了共聚单体IA对共聚反应及聚丙烯原丝结构和性能的影响。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。