成双的

But the two-component nucleator,pimelic acid/calcium carbonate exhibited good thermal stability,which infer that there are some interactions between pimelic acid and calcium carbonate.

这可能是由于庚二酸与碳酸钙之间存在某种相互作用，从而使成核效果得以稳定，而辛二酸、壬二酸与碳酸钙组成的双组分成核剂中，两个组分基本独立存在。

The results show that the formation of stable radical AH-R*between the antioxidant and the carbon-centred free radical R*from fat may be a main mechanism of the antioxidation to retard lipid rancid, and dihydrotanshinone I can also act as an antioxidant by donating a hydrogenatom to R*, becoming themselves an unreactive radical A*.

结果表明，抗氧化剂与油脂中碳中心自由基复合成稳定自由基，可能是丹参醌抑制或阻止油脂氧化酸败的主要途径，双氢丹参醌Ⅰ也可借助释放活泼H（本身转化成稳定自由基A*）有效清除R*。

The results show that the formation of stable radical AH-R* between the antioxidant and the carbon-centred free radical R* from fat may be a main mechanism of the antioxidation to retard lipid rancid, and dihydrotanshinone Ⅰ can also act as an antioxidant by donating a hydrogenatom to R*, becoming themselves an unreactive radical A*.

结果表明，抗氧化剂与油脂中碳中心自由基复合成稳定自由基，可能是丹参醌抑制或阻止油脂氧化酸败的主要途径，双氢丹参醌Ⅰ也可借助释放活泼H（本身转化成稳定自由基A*）有效清除R*。

The UV and IR spectroscopic studies of the monomer films showed that the photoreaction ratio of monomer (about 50%) was higher than the corresponding photosensitive polymer (about 10%, PVCi). The polarized IR spectra proved that obvious anisotropic absorption was displayed in the irradiated photosensitive film. With polarizing microscopy method, we found that these kinds of photoalignment films exhibited good alignment ability, and the stability of the photoalignment film could reach about 100℃. 2 A photosensitive self-assembled monolayer was fabricated that contained photo-cycloadditable groups, such as, coumarin and cinnamate. The reaction process were detected by contact angle method because the IR absorption of monolayer was very weak. The photosensitive self-assembled monolayer promote uniform alignment of nematic liquid crystals by LPUV, and it thermal stability could reach about 130℃. 3 A cationic bolaform amphiphiles was synthesized that had two photosensitive double bonds, and can be polymerized by ultraviolet. A layer-by-layer self-assembled deposition film was prepared in aqueous solution by using this material and poly (sodium 4-styrenesulfonate). The UV-Vis. spectra proved that the multilayers film was uniform and layer-by-layer. When LPUV irradiated the film, the photopolymerizable double bond underwent [2+2] cycloaddition, and the production of the reaction distributed along the polarized direction of incident LPUV. Polarized UV-Vis. spectra indicated that the irradiated self-assembled multiplayer film was anisotropic, and the dichromic ration is about 0.09, it is higher than the spin-coating method of photosensitive polymer or monomer. We used this anisotropic film as alignment layer of nematic liquid crystals, and obtained a uniform and stability alignment result, the static contrast ratio is about 100, which is very close to application of liquid crystal device. This thesis is an instance that the photochemical material was used in the physics region of liquid crystals, the route that was from photosensitive monomer, self-assembled monolayer film to self-assembled multiplayer film was undergone, by this logical research method photoailgnment of liquid crystal was extended and consummated.

围绕上述思路开展了如下工作：1合成了三种可进行光二聚反应的光敏小分子单体，LPUV 辐照制作了光控取向膜；用紫外-可见光谱法和红外光谱法分析了薄膜中的光化学反应，发现小分子的光反应程度可达到50%以上，至少比光敏高分子高出5倍；薄膜的偏振红外光谱证实，经过LPUV 辐照后薄膜出现了明显的各向异性；将小分子光控取向膜制成液晶器件，在偏光显微镜下观察看到均匀一致的液晶取向；并且热稳定性达到100℃左右，接近实用化要求。2制备了含肉桂酸、香豆素基团的自组装单层膜；采用接触角的方法监测自组装反应的动力学过程；紫外-可见光谱证实了自组装单层膜在石英基板表面形成；自组装单层膜经LPUV 辐照后能诱导液晶均匀取向，而且热稳定性可达130℃，热稳定性进一步提高。3合成了含有光敏双键的双季铵盐，在水溶液状态下将它和聚乙烯基苯磺酸钠沉积生成layer-by-layer 自组装多层膜，紫外-可见光谱证实这是一个逐层均匀的沉积；在LPUV 照射下，自组装膜中的光敏双键按照偏振方向发生[2+2]环加成反应，形成取向膜，用二向色性值评价的分子取向度高于高分子及小分子光控取向膜的水平；实验证明用自组装多层膜制成的液晶器件亮暗态均匀，静态对比度约为100，达到实用化器件的水平。

The work in this paper was mainly focused on the study of cyclization of dianions mediated by transition metals and during the course, several multi-component cyclization reactions were also observed by way of parenthesis.

本论文主要研究了过渡金属中介的双负离子成环反应，研究过程中也发现了一些多组份成环反应。

In this study, genetic analyses were conducted to determine the genetic basis in an elite resistant inbred line Siyi with complete resistance to maize dwarf mosaic. A new genetic model, two dominant complementary genes conditioning the resistance, were found by Mendelian genetic analysis based on parents, F1, F2 and backcrosses in three successive years' field trails. The two genes were further mapped near the centromere of chromosome 3 and 6, respectively by tightly linked microsatellite markers using 242 plants from F2 generation. The resistance gene on chromosome 3 is 1.0 cM apart from the flanking markers phi053 and umc1527, respectively. Whereas the linkage distance between two flanking markers bnlg1600 and phi075 and resistance gene on chromosome 6 was 1.0 and 4.0 cM, respectively. Genotypic analysis of the plants from testcross and F3 populations supported the new genetic manners.

课题组通过连续三年的抗病鉴定，在国内种质资源中筛选出一份综合农艺性状优良、配合力较高的自交系四一，三年的表型遗传研究和两年的分子标记工作，发现四一中的玉米矮花叶病抗性是由两对显性互补基因控制的，进而利用F2作图群体，把发现的两个基因定位在第三和第六染色体的着丝点附近，并获得了双侧紧密连锁的分子标记连锁图谱，其中第三染色体上的分子标记UMC1527和phi053从抗病基因双侧逼近1 cM，而第六染色体上的分子标记phi075、bnlg1600从抗病基因双侧分别逼近4 cM和1 cM；利用B2群体、F2：3家系、BC3F1群体和带有第三、第六染色体抗病基因以及两个抗病基因的近等基因系，进一步证实了四一中成株期抗性是由两个显性互补基因控制的。

I put the VC III through twice as many test wearings as any other shoe I've tested in the four years that I've been running Kicksology.net. This wasn't because I was unsure of how it would hold up over time, it was because I just didn't want to stop wearing it. I'm being completely straight when I say the Shox VC III made me a better player. It allowed me to play with more confidence than I've ever played with before and that gave me a psychological advantage, which in turn translated into a physical advantage. I've since forced myself to move on to other shoes to catch up with my review schedule, but whenever a big game rolls around, the shoe I reach for will be the Nike Shox VC III.

由于经营Kicksology.com的缘故，我穿过了不少的球鞋，但我穿VC3的次数比其他的都多个几次，这并不是因为我担心时间长了这双鞋的表现会有什么改变，而是因为我就是喜欢穿它，这双鞋让我成了一个更好的球员，谁会拒绝一双让自己变得跟好的鞋呢，这就是我打断了我试鞋的计划了，但当我要参加一些正式的比赛时我想到的球鞋还是它—VC3！

TSCa is a kind of soil disinfectant which is made of thiram, sulfur and calcium carbonate.

双硫钙合剂是由福美双、硫磺、碳酸钙按一定比例充分混合配置而成的一种土壤消毒剂。

Double Circle Fence, also known as double-lap Fence, which uses 2.5mm cold-welded together, after drawing, each horizontal wire mesh has a curved arc to increase the strength.

双圈护栏网又称为双圈隔离栅，它采用2.5mm 冷拉丝后焊接而成，每个网孔的横丝有一个弯弧，以增加强度。

Double Circle Fence, also known as double-lap Fence, which uses 2.5mm cold-welded together, after drawing, each hizontal wire mesh has a curved arc to increase the strength.

双圈护栏网又称为双圈隔离栅，它采用2.5mm 冷拉丝后焊接而成，每个网孔的横丝有一个弯弧，以增加强度。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！