查询词典 ir

The unfractured plastics slice is contrasted with fractured plastics slice in compositions, microstructures, crystallinity, thermal and mechanical properties by FT IR and X ray fluorometer TEM, XRD thermal analysis and tension test instrument.

对不会断片和会断片两种塑料片材的成份、微观织态结构、结晶度、热和机械性能用FT IR、X射线萤光光谱仪、TEM、XRD、热分析仪和拉力实验机进行对比研究。

The fatty oil from the seeds of M. cochinchinensis was extracted with petroleum ether, and the saponification was carried out with potassium hydroxide. The unsaponifiable matter was isolated and purified by silica gel column chromatography, and the structures of their constituents were elucidated by means of IR, MS, 1H-NMR, and authentic chemicals.

石油醚提取脂肪油，氢氧化钾进行皂化反应，对不皂化部分进行硅胶柱色谱的分离和纯化，用IR，MS，1H-NMR等波谱技术和对照品对照等方法进行化合物的结构鉴定。

The morphology, structure and composition of binary xerogel powders and aerogel powders were characterized by FT-IR, TEM, XRD and nitrogen adsorption.

并采用氮吸附、FT-IR、TEM 和XRD等测试手段对所制得的干凝胶和气凝胶粉末的BET表面积、表面形貌、结构和组成进行了表征。

Eight new chlorosubstituted chlorin de-rivatives with skeleton of chlorophyll-a were synthesized and their chemical structures were characterized by elemental analysis, UV, IR and 1H NMR spectra.

所合成的新化合物均经UV， IR， 1H NMR及元素分析证明其结构。

n thes paper, the oligomers with different molecular weight of monohydroxylpolyethersulfones were synthesized in solution and the optimum condition ofpolymerization was obtained; With phase transfer catalyst method,the oligomerswas obtained and transformed to monovinylpolyethersulfones macromer. Its structure was characterized with IR and 1H-NMR.

本文采用溶液法以单酚（4－氯－4'－羟基二苯砜）为原料合成了不同聚合度的单酚低聚体，得到了控制聚合度的最佳聚合条件；用相转移催化剂法成功地将单酚转化为单烯大分子单体，并用IR、1H—NMR对其结构进行了表征；测定了双键官能度均在1.90以上。

The product was characterized by IR and elemental analysis and assayed by HPLC.

通过元素分析、IR对其结构进行表征，并用HPLC测定其含量。

Group IR(n=10): Dissociating hilum of left lung and blockading it for forty-five minutes,and then opening hilum of left lung .Two hours and five later, samples were got.

IR组，对照组(n=10)，开胸后首先进行左肺门结构的常规游离，接着阻断肺门45分钟，开放后不做其他处理，2小时5分钟后留取肺组织。

The products have been charactered by XRD, FT-IR, Atomic absorption and electrochemical analysis etc.

通过XRD、FT-IR、原子吸收、电化学等手段分别对样品的组成、结构、粒径进行了表征。

C NMR, IR, GC MS and TG combined with some techniques including solvent extraction method, TPO and structure characterization were applied to determine the components of the deposit on the coked β zeolite catalyst after reaction for 8?000 h in pilot plant scale. It was shown that the composition of the deposit ...

用13CNMR ，IR ，GC MS ，TG等手段，并结合溶剂萃取法、TPO和结构分析等方法，确定了改性β沸石催化剂上沉积物的主要成分是多异丙基苯和四氢化萘，且主要分布在沸石孔道内；同时，快速升温后恒温烧炭的效果优于慢速升温后恒温烧炭的效果

Three types of base asphalt and six SBS were used to produce SBS modified asphalt. The interaction of SBS modified asphalt was discussed in different states between the base asphalt and SBS based on their compositions. Through the traditional tests, such as penetration, soften point and ductility, and US SHRP tests, the results indicated that influences to affect the temperature susceptibility, high and low temperature performance, aging characteristics are base asphalt, SBS types and their dosages. The functions of penetration to viscosity and complex shear modulus G~* to complex dynamic shear viscosity η~* were set up, and then theviscosity-temperature susceptibility of wide temperature span and the calculation method of low temperature viscosity were obtained."Process" evaluation criterions, high grading critical temperature T_ and low grading criticaltemperature T_ , were suggested according to the high and low temperatureperformances of SBS modified asphalt. Using the experience of Repeated Creep and Recovery Test for Binders, a new high-temperature evaluation index,modification rutting factor G~*~(-9) was obtained. The results after RTFO and PAV aging indicated that traditional tests didnt differentiate base asphalt and SBS modified asphalt, but dynamic mechanics temperature spectrum and G*-5 black chart clearly reflected the influence of aging to the SBS modified asphalt. With the IR and GPC tests, the reason of aging to the SBS modified asphalt were due to asphalt phase oxygenated and SBS phase depredated.

论文选择3种油源的基质沥青和6种SBS改性剂制备改性沥青，通过分析基质沥青和SBS改性剂的组成结构特点，得出了不同状态下SBS改性沥青的SBS与基质沥青的相互作用机理；通过针入度、软化点、延度等常规试验以及美国SHRP试验，分析了基质沥青、SBS改性剂类型与剂量对SBS改性沥青的温度敏感性、高低温特性及老化特性的影响；建立了针入度-粘度、复数模量G~*-复数粘度η~*的换算关系，得出了宽温度域的粘温指数VTS和较低温度下粘度的计算方法；通过高低温性能分析提出了&过程&评价参数高温等级温度T_和低温等级温度T_；借鉴重复恢复与蠕变试验研究成果，得到了SBS改性沥青高温评价指标改进型抗车辙因子G~*~(-9)；RTFO和PAV老化后的性能试验结果表明，常规试验难以区分SBS改性沥青与基质沥青的差异，而动态力学温度谱、G~*-δ黑斑图可以反映老化作用对SBS改性沥青的影响，且通过IR试验和GPC试验得出SBS改性沥青老化是沥青相的氧化和SBS的降解共同引起的；通过不同温度下SBS改性沥青混合料的旋转压实SGC试验，根据粘度与剪变率的关系，提出用剪变率60(1／s)测试SBS改性沥青的粘温曲线，并按照0.17±0.02Pa.s和0.28±0.03Pa.s确定施工温度。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。