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In this part of dissertation, the cure reactions of PGA withhexamethylene diisocyanate isocyanurate were investigsted byFTIR, DSC and gel fraction.

本文用FTIR、DSC和凝胶含量的测定等方法，对聚丙烯酸环氧丙酯和六亚甲基二异氰酸酯三聚体的固化反应进行了研究。

Isocyanurate was qualitatively identified by infra-red absorption spectroscopy analysis, the quantity of isocyanurate was calculated according to mass fraction of NCO measured by di-n-butylamine method, the thermal stability of prepared elastomers was characterized by thermogravimetric analysis.

用红外光谱法证实了产物中异氰脲酸酯的存在，根据用二正丁胺法测得的NCO基团的质量分数可计算出异氰脲酸酯的质量分数，用热重法分析了产物的热稳定性。

You run a small sample of your fraction , now very reduced in volume and quite clear on an isoelectric focusing gel.

你在等电聚焦胶上，跑少量的非常透明的所得样品。

16 And 19 components are identified from three specimens,which accounted for 99.63%, 99.70% and 99.28% of volatile fraction, respectively. The major components are pulegone and menthone, which accounted for 89.02%, 83.51%and 87.11%(Horm rural Buerjin county of Xinjiang). Others are isomenthone, piperitenone,isopulegone and limonene et al.Key words Ziziphora clinopodioides Lam. essential oil gas chromatography-mass spectrometry

从3个样本中分别鉴定出10种、16种和19种挥发油成分，占各自挥发油总量的99.62%、99.71%和99.28%。3个采集地的芳香新塔花的主要成分相同，均为长叶薄荷酮和薄荷酮，两者总量分别达到了89.02%、83.51%和87.11%（新疆布尔津县禾木乡样品），其他主要成分为异薄荷酮、胡椒烯酮、异长叶薄荷酮、柠檬烯等。

For the riser reactor, the simulation result showed that the mass fraction of olefin decreased from 35.1% to 18%, and most of the olefin was converted to isoparaffin, which was useful to maintain the gasoline octane rating.

模拟结果表明，对提升管反应器而言，汽油经过低温改质反应后，烯烃含量可以从35.1%降低到18%左右，烯烃降低幅度可达48%，汽油中烯烃主要转化为异构烷烃。

The results showed that after isothermally treatment at 800℃ and 450℃ the steel could get the highest volume fraction of retained austenite which was about 15.1% and the highest tensile strength.

结果表明经800℃-450℃等温处理后残余奥氏体体积含量最高达15.1%，并且有最高的拉伸强度995MPa，而经820℃-450℃等温处理后则有最高的延伸率20.0%和最大强塑积19400MPa%。

The itaconic acid carboxylated ACM prepared by γ-ray irradiation has higher gel fraction and better cure characteristics as well as mechanical properties than that prepared by chemical method.

对于以衣康酸为交联单体的ACM，辐射法制备的橡胶比化学法制备的橡胶拥有更好的硫化特性、更高的凝胶含量和更优异的机械性能。

These indicate The extracts of different parts of Kandelia candel all show broad-spectrum antibacterial activity. The antibacterial activity in vitro of B fraction of stem aqueous extracts was the strongest among all the extracts.

实验显示，秋茄不同部位提取物均呈现广谱的抗菌活性，其中以枝水提取物B部位对10种菌株的体外抗菌活性最强。

AbstractObjectiveTo study the protective effect of extract from Buthus martensic Karch and the fraction separated using alcohol on liver injury induced by carbon tetrachloride(CCl4) in mice and its mechanism.

目的 研究东亚钳蝎提取物BmKE及其醇提部位对四氯化碳诱导的小鼠肝损伤的保护作用及其作用机理。

The optimal conditions were found to be: n:n=1:1.5; mass fraction of catalyst to reactants, 1.0%; reaction time, 0.75 h and dried cyclohexane, 8 mL. Under these conditions, the yield of cyclohexanone ethylene ketal was 87.7%.

实验结果表明，在n∶n=1.0∶1.5、催化剂用量占反应物料总质量的1.0%、反应时间0.75 h的条件下，环己酮乙二醇缩酮的收率为87.7%。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。