聚丙烯

Olyacrylamide, as an ameliorant of soil structure, is the ameliorant of soil in the aspect of water conservation, fertilizer conservation and yield increase, with a new product named PAM made in French as a material, we adopt simulating and field experiments, using Yang ling soil, to study the effect of PAM on soil structure and fertilizer eluviations systematically.

AM(聚丙烯酰胺，Polyacrylamide，简称PAM)作为土壤结构稳定剂，具有改土、保水、保肥、增产等效应。

The significance of studying natural fiber/polypropylene composites depends on their man affinity property, environment amicableness , sustained property.

研究植物纤维／聚丙烯复合材料的意义在于这种材料具有人类亲和性，环保友好性和可持续性。

Speciality experience on film area, or mechanic area or Amoco PP product.

对膜类产品，或机械设备，或Amoco的聚丙烯产品有专门的工作经验。

The results showed that the structure of modified polypropylene fiber was similar to acetate fiber, the contact angle of it decreased and the polarity increased.

研究表明：改性烟用聚丙烯纤维具有类似于醋酸纤维的结构形态，对水的接触角降低，纤维的极性增加，有利于提高其吸附性能。

The unit cell parameter of polypropylene crystallized with different method and condition was studied:curves of wide angle X-ray diffraction are determined by stepwise scanning method,X ray multi peaks resolution program and simulation program of unit cell parameter developed by the general inverse matrix method are used as data processing of determined results.

研究了不同方式和条件下形成的等规聚丙烯结晶的晶胞参数，用步进扫描测定试样的宽角X-射线衍射，用广义逆矩阵法编的计算机分峰程序和晶胞参数拟合计算程序对测定结果进行计算和数据处理。

The rheological behavior of the anhydrite /PP composites was studied by the modified and un-modified anhydrite .

研究了硬石膏及其表面改性对聚丙烯流变行为的影响。

Maleic anhydrite was grafted onto polypropylene by melt grafting method, and the effects of the amounts of monomers and initiator on the grafting rate were discussed.

采用熔融接枝法，考察了单体和引发剂用量对聚丙烯/马来酸酐接枝物接枝率的影响。

Polypropylene centrifuge tubes can not be with concentrated nitric acid (95%), aqua regia, toluene, benzene, gasoline, kerosene, ether, etc. from accessing.

聚丙烯离心管不能与浓硝酸（95％）、王水、甲苯、苯、汽油、煤油、乙醚等接触使用。

Based on the cloning FeSOD gene of the HZNH, the recombinant prokaryotic expression vector, PQESOa/FeSOD, was constructed and digested with restriction endonuclease BamH I and Pst I to check its construction. The PQE30a/FeSOD was then transformed into E.coli Ml5 and induced with IPTG. The high expression in vitro was obtained and analyzed on SDS-PAGE gel. The*results showed that the target proteins held a 37% portion in whole bacterial proteins and consisted of two parts, the soluble proteins and inclusion bodies. The soluble proteins in the aqueous layer, checked by means of activities of FeSOD enzymes and analyzed by means of activities of isozymogram from PAGE, demonstrated the induced expression proteins had the active nature of FeSOD enzymes.

以克隆的特异种质烟草HZNH的FeSOD基因为基础，构建了原核表达载体PQE30a／FeSOD，经限制性内切酶BamH Ⅰ、Pst Ⅰ双酶切鉴定后，再转化入大肠杆菌M15中，通过IPTG诱导，得到高效体外表达，经SDS-聚丙烯酰胺凝胶电泳检测，表达的目的蛋白占总菌体蛋白的37％，可溶性和包涵体两种形式均有存在，上清中的可溶性蛋白经FeSOD酶活测定和同工酶活性谱带分析，表明诱导表达的上清中的目的蛋白为有活性的FeSOD酶。

Some of the experimental results with glycerin and PAM aqueous as the tested liquids were presented in this paper.

文中给出了甘油的温度场分布以及聚丙烯酰胺水溶液的温度边界层的实验测量结果与讨论。

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。