聚丙烯

In this paper,polyvinylamine was prepared by Hofmann degradation of polyacrylamide, and its charge density and application as strength aids were studied.

采用聚丙烯酰胺的Hofmann降解反应制得聚乙烯胺，对其电荷密度进行初步分析，并研究了PVAm对纸页的增强作用。

Compared with the general concrete spray layer, the stress distribution is more homogeneous and the yield capacity is better.

与素混凝土喷层相比，聚丙烯纤维混凝土喷层中的应力分布较均匀，有较好的让压能力。

Objective To investigate the cellular immunologic changes in patients who have complications after polyacrylamide hydrogel injected.

目的：观察聚丙烯酰胺水凝胶注射后发生并发症者的外周血淋巴细胞的免疫学变化。

Objective To study the use and clinical value of MR hydrography in augmentation mammoplasty with polyacrylamide hyarogel injection.

目的 探讨MR水成像技术对聚丙烯酰胺水凝胶注射隆乳术后的MRI表现及其应用价值。

The factors affecting quality index of biaxial oriented polypropylene speciality resin (WH-T36F), such as isotactic index , melt flow index, and ash specification were analyzed, based on the last two years'production data of the plant.

根据装置近两年的生产情况，对影响双向拉伸聚丙烯专用树脂WH-T 36 F质量指标的因素(等规指数、熔体流动指数、灰分)进行了分析。

Objective To discuss the better and more effective cure methods on induration after Polyarylamide Hydrogel injection.

目的：探讨聚丙烯酰胺水凝胶注射后并发硬结的更好、更有效的治疗方法。

The products are characterized by soft, in-noxious, inodorous, moisture proof, anticorrosion, light weigh, stylish appearance, anti-oil.

中空板制品是采用聚丙烯原料挤出成型，是一种新型结构材料。具有质轻、坚韧、无毒无味、美观、抗压、防潮、外形平整、耐油污等特点。

The concentration of the polymer that can increase the viscosity of the system had nothing with the interfacial tension.

当烷醇酰胺浓度超过0.3%时，界面张力反而升高；部分水解聚丙烯酰胺的浓度对二元体系的界面张力影响很小，它只是增加了体系的黏度。

The flexible interlayer was introduced into glass mat reinforced polypropylene composite by the grafting of rubber chain o nto fiber surface. And the effect of the kind and thickness of flexible interlay er on the interfacial adhesion and the mechanical properties of composites was investigated.

通过橡胶分子链在玻璃纤维表面的接枝，在玻璃纤维毡增强聚丙烯复合体系中引入了界面柔性层，研究了柔性层的种类及厚度对复合体系界面结合及力学性能的影响。

Repair: hernial sac resection and abdominal wall were sutured with silkthread layer by layer interruptedly,37 cases; 24 patients were running-sutured with "qiangsen" asorbed thread layer by layer; 2 patients whose abdominal defection were repaired with polypropylene melex and another with Dacron patch.

修补方法：疝囊组织切除，腹壁分层丝线间断缝合37例；"强生"可吸收线连续缝合 24例；腹壁缺损用聚丙烯丝网补片修补2例；Dacron修补腹壁缺损1例。

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。