高分子

This study uses Cartesian Grid to simulate polymer flow in a fishtail flat extrusion die, reasonable velocity, pressure, temperature and viscosity profile is obtained. This research proves that Cartesian Grid method, a fast and fully automated mesh generation method, has practical application in the CAE analysis of polymer processes.

本研究使用卡氏网格来模拟高分子在一个鱼尾形平板押出模具中流动情形，求解其速度，压力，温度及黏度分布，均得到合理之结果，证明卡氏网格法，一个快速且自动化的网格产生方式，在塑胶加工CAE分析方面确实有其应用价值。

Under the guidance of the law of Archimede and the discovery that buoyancy duration is the key factor determining the gastric retention of the floating dosage, the experiment was carried by studying the floatage and integrity-the preconditions for floating dosage for gastric retention from following four aspects, that is water uptake kinetics, swelling kinetics, eroding kinetics and floating kinetics.

亲水性高分子材料制备的漂浮片，漂浮力的产生和维持受两个方面的影响，吸水膨胀引起密度降低，浮力增大，水渗入导致密度增大，浮力降低。

Study on the floc size and structure of cationic organic polymers by using small-angle laser light scattering .

利用小角激光光散射研究阳离子有机高分子絮凝剂的絮体粒径和絮体结构。

In a word, modified starch can be used as a kind of promising flocculant agent in water treatment.

总之，改性淀粉是一种很有发展前途的天然有机高分子絮凝剂。

Moreover, the use of aluminum salt and polyacrylamide flocculant would lead to latent threat to peoples health.

而且铝盐絮凝剂和聚丙烯酰胺类高分子絮凝剂的使用会给人体健康带来潜在危害。

A flocculant is the core of coagulation technology.

絮凝剂是絮凝法水处理技术的核心，目前阳离子高分子絮凝剂作为龙头产品受到人们广泛关注。

Due to its linear chain structure, polyacrylamide, combined with DDA, tends to form the high molecular collector with more surface activities. In addition, with the high molecular weight, polyacrylamides (with the exception of hydroxamic acid polyacrylamide) can strongly flocculate kaolinite, which can increase the adsorptive density of collector and activate the kaolinite flotation.

由于分子的直链结构，聚丙烯酰胺药剂易与捕收剂十二胺形成表面活性更高的高分子捕收剂，同时由于聚丙烯酰胺具有较高的分子量，对高岭石显示很好的絮凝作用，增加了捕收剂的吸附密度，活化了高岭石的浮选。

Microbial flocculants are newly developed natural macromolecular organicsubstances, which have the ability to flocculate various wastewater. For theirbiodegradability, high performance and harmlessness to environment, microbialflocculants have drown more and more attentions and become front line of investigation.

微生物絮凝剂是近年来研究发现的一类新型的具有絮凝活性的天然有机高分子化合物，由于它对各类水质具有良好絮凝效果，且具有安全、无毒、易降解等特性，因而备受关注，成为国内外研究开发的热点和前沿课题。

The ratio of concentrations of protein and flocculants plays a key role in the flocculation of protein.

蛋白质能够从溶液中絮凝沉降下来必须有适当的蛋白质和高分子絮凝剂的浓度比值。

The effects of flocculator adding sequence,molecular weight and electrical charge on flocculation performance were examined.

筛选合适的有机高分子絮凝剂与无机混凝剂复合使用，是提高处理效果的有效途径。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。