对位法

Brominated butyl rubber was prepared by solution method,and its microstructures were characterized by 1H-NMR. It has three main microstructures,that is the unbrominated isoprene structure,the exomethylene allylic bromide structure (structure Ⅱ) and the bromomethyl olefinic structure (structure Ⅲ).

通过溶液法制备溴化丁基橡胶，并用核磁共振对溴化丁基橡胶的微观结构进行了分析，其中存在3种主要微观结构，即未溴化的丁基橡胶结构，溴代仲位烯丙基结构及溴代伯位烯丙基结构。

The 40Ar/39Ar geochronologic study indicates that with the ratio 40Ar/39Ar in atmosphere which changes with time,the time and strength of degassing of the earth can be probed,and that the 40Ar/39Ar dating method can help researchers study not only crust mantle evolution and the history of magma dynamics during the cooling process and granitoid emplacing, but also the hydrothermal ore deposit dating.

研究表明：可以通过大气中40Ar/39Ar比值随时间的变化窥探地球去气作用的时间和强度；40Ar/39Ar法不仅有助于研究岩浆冷却过程和花岗岩侵位机制等岩浆动力学的历史和壳幔演化，而且对研究热液成矿年龄也是很有效方法之一；在一定的地质条件下，沉积地层时代越老，40Ar/39Ar值越高；当今40Ar/39Ar年代法已为全球环境演变研究提供了一种强有力的工具。

The experimental results showed that there were higher yield and bromine content when the bromine/peroxides method was used.

采用溴／过氧化物法和NBS法对五溴甲苯进行苄位溴化，合成了五溴苄基溴，比较了两种方法的优缺点。

In this research, B2 gene of HCV was highly expressed as a fusion protein (Trx-B2) by cloning into pThioHisA, and induced specific anti-HCV antibody in higher titer than unmodified B2 protein after immunize mice or rabbit.The results showed antigen Trx-B2 has obvious immunogenicity and induced specific antibody,which might be able to serve as diagnosis HCV. Consequently, this PcAb of rabbit was used to coated Immulon plate, and a method of both antibodys sandwiching antigens was developed to detect 32 HCV positive serum and 32 nomal serum.Results show that ratio of positive are 87.5%and 43.75% respectively.

但缺点是该抗原所诱导的抗体滴度较低，可能是由于其分子量较小，所以本课题将人工合成的HCV复合多表位抗原基因B_2克隆到表达载体pThioHisA中，利用硫氧还蛋白融合方式对该抗原进行修饰，并在大肠杆菌中表达融合蛋白(Trx-B_2)，纯化该蛋白后免疫小鼠及家兔，结果表明用硫氧还蛋白修饰后的融合蛋白免疫小鼠和家兔后，得到的抗体滴度均高于未经修饰过的复合多表位抗原合成肽所诱导的抗体滴度，并从免疫后的兔血清中提取IgG包被酶联板，利用双抗夹心法分别检测了32份HCV阳性血清和32份正常人的血清，结果阳性率分别为87.5%和43.75%，符合率为71.88%。

To introduce the mould level measurement and automatic control for the thin slab continuous caster in Lanzhou Iron and Steel Plant, put emphasis on the working principle, technical features, installation and maintenance of the laser measurement system and simply describe the automatic control of the mould level.

介绍兰州钢厂薄板坯连铸结晶器液位测量与自动控制，重点介绍激光法测量的工作原理、技术特点、安装和维护，并对液位自动控制作了简要介绍。

The pairing correlation is treated by BCS method and the isospin dependent pairing forces have been used.

对关联的处理采用了BCS方法，并使用了与同位旋有关的对力常数，对不成对的核子采用了'阻塞法' ，并考虑了核的轴对称形变。

In early April the megabillionaire hosted 150 students from the University of Pennsylvania's Wharton School and offered Fortune the rare opportunity to sit in as he expounded on everything from the Bear Stearns bailout to the prognosis for the economy to whether he'd rather be CEO of GE - or a paperboy.

在4月初，这位超级百万富翁接待了150位宾夕法尼亚大学沃顿商学院的学生并给了《财富》杂志一个宝贵的机会得以听他详述从贝尔斯登的救赎到对美国经济的预测以及他是更愿意当个报童还是GE的CEO之类的问题。

In early April the megabillionaire hosted 150 students from the University of Pennsylvania's Wharton School and offered Fortune the rare opportunity to sit in as he expounded on everything from the Bear Stearns bailout t o the prognosis for the economy to whether he'd rather be CEO of GE - or a paperboy .

在4月初，这位超级百万富翁接待了150位宾夕法尼亚大学沃顿商学院的学生并给了《财富》杂志一个宝贵的机会得以听他详述从贝尔斯登的救赎到对美国经济的预测以及他是更愿意当个报童还是GE的CEO之类的问题。

This paper describes the technical features, process principle and process flow of that technique, putting emphasis on the implementation procedure of hole position arrangement, measuring control, boring and hole completion, grouting sequence, pressure treatment and hole seal. It discusses key points of construction quality control, analyzes problems occurred during the construction and puts forward treatment measures.

文章介绍了袖阀管法注浆技术特点、工艺原理及工艺流程，重点从孔位布置、测量控制、开孔与成孔、注浆顺序和压力、封孔处理等方面介绍了袖阀管法注浆实施过程，论述了质量控制要点，对施工过程中出现的问题进行了分析，并提出了处理措施。

One observer noted that His Holiness seemed particularly intrigued by paintings by Mark Rothko and Jackson Pollock.

一位观察员发现，法王似乎对马克罗斯科和杰克逊波拉克（多多注：两位都是著名的抽象主义画家）的作品尤其感兴趣。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。