聚丙烯

In the process of producing polypropylene, there is 10%-20% propylene in the off gas.

在聚丙烯的生产过程中，尾气中含有较多的丙烯。

Any of various thermoplastic resins that are polymers of propylene.

聚丙烯一种热塑性树脂，它是丙烯的聚合物。

In order to recover propylene from the tail gas, the membrane separation technology had been applied.

为了回收脱气仓尾气中的丙烯，在聚丙烯装置上采用了膜分离技术。

Particle swarm optimization; sequential quadratic programming; model predictive control ; polypropylene

微粒群优化算法；序贯二次规划；模型预测控制；聚丙烯

The polymeric soil amendmentswere applied in increasing soil value,and reclamation of saliane sodic soil,and greeningdesert,and controlling water and soil erosion,and amending arid and semiarid soil,andincreasing fertilizer utilization rate and crop yield,etc.

本文研究了淀粉接枝共聚物、羧甲基纤维素接枝共聚物、壳聚糖接枝共聚物、聚丙烯酰胺及其衍生物等对赤红壤的改良作用，揭示了赤红壤在这些聚合物作用下理化参数的变化规律。

Methods Three different resolvable solutions were adopted to take out the proteins of MOLT-4 cells as the example, and then the proteins were separated by two dimensional polyacrylamide gel electrophoresis.

以MOLT-4细胞为例，采用3种溶解性能不同的裂解液提取细胞中的蛋白质组，并分别进行双向聚丙烯酰胺凝胶电泳。

The result shows that the anti static and fire retardant property of these material was good.

结果表明：所研制的聚乙烯、聚丙烯、ABS塑料具有优良的抗静电阻燃效果。

The interactions between polymer and each of four kinds of surfactants were studied by means of a controlled-stress rheometer.

采用控制应力流变仪全面研究了阳离子型、阴离子型、非离子型以及两性表面活性剂与部分水解聚丙烯酯胺相互作用。

The rheological properties of PP/PS blend under vibration force fi eld were studied by self-made polymer rheometer.

利用自制的聚合物流变测试装置，研究了不同配比的聚丙烯/聚苯乙烯共混物在振动力场作用下的流变特性。

Keywords polypropylene fibre; sailcloth ;coating finish;natural latex;multi-sulfide;dip-coating

聚丙烯纤维；篷帆布；涂层整理；天然胶乳；多硫化物；浸渍涂层

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。