查询词典 polyethylene

The process conditions for trial production of low density polyethylene speciality resin (LD 163) for heat shrinkable film were selected after determining the speciality resin′s quality index and conjunctively based on the dependence of LDPE resin′s performance and relative mass and its distribution on the resin′s molecular chain structure, such as branched short and long chains.

确定了热收缩膜专用树脂LD163的质量指标后，根据低密度聚乙烯树脂性能与相对分子质量及其分布、短链支化、长链支化等结构的对应关系拟订了其试生产工艺条件。

A dimeric catalyst is formed from titanium main catalyst and alkylauminium cocatalyst and the copolymerization catalyst is formed from metallocene catalyst and corespondent cocatalyst, and the above-mentioned both catalysts are formed into the invented double-function catalytic system which can directly make ethylene implement dimerization in same polymerization system, and at the same time, produce copolymerization reaction to form linear low-density polyethylene.

一种用于由乙烯合成线性低密度聚乙烯的双功能催化体系，二聚催化剂由钛系主催化剂和烷基铝助催化剂组成，共聚催化剂由茂金属催化剂和相应的助催化剂组成，这两种催化剂组成的双功能催化体系，可在同一聚合体系中，直接使乙烯二聚的同时就地发生共聚反应，生成线性低密度聚乙烯。

Moreover, the molecular weight of polyethely and its distribution or even the physical properties could be adjusted by changing the non-cyclopentadiene ligand; and bi-or single modal polyethylene could be realized in one system according to the different preparation methods and conditions of CpTiCl.

由于非茂配体的可选择范围很广，通过改变半茂钛配合物中的非茂配体，可以调节半茂体系聚合产物的分子量及分子量分布，乃至聚合物的物理性能；还可以根据制备方法和反应条件的不同，实现同一体系内获得双峰或单峰分子量分布聚合物的目的。

Sales: imported and domestic natural rubber, butylbenzene rubber, polybutadience rubber, butyronitrile rubber, EPDM rubber, butyl rubber, chlorosulfonated polyethylene tyre types superfine, smell-free, butyl, butyronitrile, color and milk natural rubbers, compound rubbers and reclaimed rubbers; raw and auxiliary materials for rubber chemical such as rubber accelerator, antiager, black, paraffin, octadecoic acid, zinc oxide, magnesium oxide, titanium pigment, coumarone and powder sulfur; different specifications of EPDM color granules, crossover antiskid rubber floor brick, plastic rubber sites, lawn layout, different specifications of antiskid rubber floor brick, rubber blind-people road brick, plant brick, tree guard brick, top adiabatic brick, road rubber reducer brick, special green rubber tyre rubber granule, rubber powder and product, different rubber and plastic pipe, adhesive tape and plate, flexible rubber soft joint, rubber stop tape, bridge extension device, natural rubber plate pedestal, water-expanding rubber, rubber and plastic air duct, PE/PP/PVC water pipe, fulgurite, flame retardant wire gutter, floor wire gutter, MC nylon product, rubber and plastic machinery and fitting relieve, and processing of different ordinary and special rubber and plastic and nylon products.

经营销售：进口、国产天然胶、丁苯胶、顺丁胶、丁腈胶、三元乙丙胶、丁基胶、氯璜化聚乙烯、轮胎类精细、无味、丁基、丁腈、彩色、乳胶类等多种型号天然橡胶、合成橡胶和再生橡胶；硫化促进剂、防老剂、炭黑、石蜡、硬脂酸、氧化锌、氧化镁、钛白粉、古马龙、工业硫磺粉等各种橡胶化工原辅材料；各种规格EPDM彩色颗粒，天桥防滑橡胶地砖、塑胶场地、人造草坪铺装、各种规格防滑橡胶安全地砖、橡胶盲道砖、植草砖、树木围护砖、屋顶隔热板、道路橡胶减速块，专用绿色环保型橡胶轮胎胶粒、胶粉及成品，各类橡胶、塑料胶管、胶带、胶板，可挠曲橡胶软接头，橡胶止水带，桥梁伸缩装置，天然胶板式橡胶支座，遇水膨胀橡胶，橡胶、塑料导风筒，PE\PP\PVC水管、电管、阻燃线槽，地板线槽、MC尼龙产品、橡塑机械及配件调剂，并承接各种普通、特种橡塑、尼龙产品加工制造。

Key words:decompressive craniectomy;cranioplasty;Polyethylene;Medpor;surgery

去骨瓣减压术；颅骨修补；高密度聚乙烯多孔材料；Medpor；外科手术

The adsorption of polyethylene chain on the hydroxylated β-cristobalite(100) surface was studied by molecular dynamics simulations.

利用分子动力学模拟方法研究了聚乙烯链在羟基化β-石英(100)表面上的吸附。

In this paper,the treatment of water stress to Cryptomeria japonicaD.Don seeds was made by the different concentrations of polyethylene glycol.

本文采用配置不同浓度的 PEG溶液来模拟土壤自然水势，对日本柳杉种子萌芽实验进行人工水分胁迫处理。

Cryptomeria japonnica was liquefied in polyethylene glycol/glycerol co-solvent with H2SO4 and HCl as a catalyst.

本研究以聚乙二醇／丙三醇为混合溶剂，硫酸及盐酸为催化剂，对柳杉木材Cryptomeria japonnica D。

The method of calculating the crystallinity of polyethylene was studied by DSC.

论文研究和制定了用DSC测定聚乙烯结晶度的方法。

The esso essien and high level of 220 R and R 320 for compressor oil cylinder provide very good lubrication, and can process compatible with polyethylene.

埃索埃士高 R 220 和 R 320 级润滑油既可为压缩机汽缸提供很好的润滑，又能与聚乙烯过程相容。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。