双

Dipelta, an endemic genus to China, belongs to the family Caprifoliaceae, comprised with four species: D. floribunda, D. elegans, D. yunnanensis, D. wenxianensis.

双盾木属隶属于忍冬科，是我国古特有属，属下有4个种：双盾木(D.floribunda)、优美双盾木，云南双盾木(D.yunnanensis)和文县双盾木(D.wenxianensis)。

The levels of SOD and CAT significantly increased and MDA decreased in bifidobacterium group compared to radition damage group.Electronic microgragh of spine neurocyte and neurogliocyte showed that cytoplasm,cytoblast and plastiosome were significantly engorged ,and neurogliocyte apoptosised in earlier period. TLR2mRNA increased in C group compared to B group by RT-PCR. Cytochrome C in kidney increased in C group compared to B group, but bcl-2,NF-Кb decreased. Conclusions : Enteroclysm is better compared to intragastric administration.

双歧杆菌处理组肝组织中SOD和CAT水平明显高于放射损伤组(P.01)，同时MDA明显低于放射损伤组(P.01)；电镜结果显示：放射损伤组与双歧处理组的细胞浆、细胞核和线粒体均明显肿胀，双歧处理组同时具有早期凋亡现象；RT-PCR结果显示：双歧处理组TLR2mRNA的表达明显高于放射损伤组；免疫组化结果显示，双歧处理组Cytochrome C的表达明显优于放射损伤组，而NF-кBp65和bcl-2则相反。

From comparative research of synchronous and asynchronous reaction of dehydrogenation and cracking of dipentene,it is shown that farraginous extent of by-products from synchronous reaction is relatively high.

双戊烯脱氢裂解的同步反应和异步反应对比研究显示，双戊烯脱氢裂解的同步反应产物比较混杂，反应产物中甲苯的相对含量仅为24.03%，双戊烯相对于甲苯的料耗比为5.34，甲苯的得率为30.79%，中间产物对伞花烃的得率为2.49%；双戊烯脱氢裂解的异步反应产物混杂程度相对较低，反应产物中甲苯的相对含量为40.74%，对伞花烃的相对含量为18.31%，双戊烯相对于甲苯的料耗比为3.33，甲苯的得率为49.26%，中间产物对伞花烃的得率为16.92%。

Results Monopolar stimulation was used in 32 patients who underwent unilateral operation, while in 30 patients undergoing bilateral operations, 25 were stimulated by bipolar model, 2 by monopolar model, and 3 by monopolar stimulation in one side and bipolar in another side. Superior shift of electrode contact point was found in 7 cases.

结果 32例行单侧手术者均接受单极刺激；30例行双侧手术病人中，接受双侧双极刺激25例，双侧单极刺激2例，一侧单极刺激、另一侧双极刺激3例。7例触点调整均为上移。

The morphology of polyembryonic rice IR36-Shuang could be differentiated into 2 types: uncomplete twin seedlings and complete twin seedlings.

IR36-双在双胚苗性状的表现形态上有其特异性，在同一纯合株系的群体内双胚苗的苗位有非完全双苗和完全双苗两种类型。

The results are as follows: The location of seedling in the polyembryonic rice IR36-Shuang could be differentiated into 2 types: the uncomplete twin seedlings and the complete twin seedlings.

结果表明，多胚苗突变株系&IR36-双&在双胚苗性状的表现形态上有其特异性，在同一纯合株系的群体内双胚苗的苗位有非完全双苗和完全双苗两种类型。

The morphology of polyembryonic rice IR36-Shuang could be differentiated into 2 types: uncomplete twin seedlings and complete twin seedlings. There were 2 types in uncomplete twin seedlings, i.

IR36-双在双胚苗性状的表现形态上有其特异性，在同一纯合株系的群体内双胚苗的苗位有非完全双苗和完全双苗两种类型。

Compared to healthy controls, GTCS presented decreased gray matter volume in the bilateral thalamus, frontal lobe, insula and cerebellum regions. There were no regions showing significant increased gray matter volume. Correlation analysis revealed that bilateral thalamic, left medial frontal gyrus, left middle frontal gyrus and left precentral gyrus GMV had negative correlations with the frequecy of epilepsy.

通过GTCS患者组与正常对照组的比较，发现GTCS患者的双侧丘脑、双侧额叶、双侧岛叶、双侧小脑等区域的灰质体积有比较明显的减小，但没发现有意义的灰质体积增高的区域；患者双侧丘脑、左侧中央前回、左侧额内侧回、左侧额中回和其发病频率呈负相关，没有正相关的区域。

The two-photon absorption cross-sections of these styryl derivatives were determined by Z-scan technique, and the benzothiazolium derivatives exhibited the largest TPA cross-sections (10〓s·cm〓/photon) and the best power limiting ability at high operable incident intensity. The results show that the benzothiazolium derivatives are promising organic compounds as two-photon absorption optical limiting materials. 2. Several organic dyes active to 800nm femtosecond laser with D-π-A structure were designed and synthesized.

研究了它们的上转换荧光、上转换激射和光限幅行为，通过改变染料分子共轭体系的大小，首次实现了在576nm-635nm范围内的双光子上转换激光波长的调节，其中噻唑啉碘盐类二苯乙烯化合物的双光子上转换激射峰（576nm）是迄今在1064nm皮秒激光作用下能够得到的最短波长的激光；阴离子显著改变上转换激射效率，但对上转换荧光峰和激射峰的位置影响很小；增加溶液的浓度，上转换荧光光谱和激射光谱红移，并在一定的浓度范围内，能够有效的提高上转换激射效率；利用Z-扫描技术测定了染料分子的双光子吸收截面，发现苯并噻唑类染料分子的双光子吸收截面高达10〓s·cm〓／photon，而且在较大的入射光强范围内，这类染料分子具有较大的光限幅能力，是一类作为双光子吸收光限幅材料很有潜力的染料分子。

In this dissertation, first, based on theory of cutting tooth about the gleason spiral bevel gear, the equation of meshing in the process of cutting tooth, the surface equation of generating gear as well as the general tooth surface equation of the double circular arc spiral bevel gear, using GB12759-1991 type of double circular arc gear as a basic gear profile, a three-dimension solid model of double circular arc spiral bevel gear which has the good adaptability was carried out by used of Unigraphics software;Second, by researching of the algorithm about contact and collision as well as various contact types based upon Contacting Finite Element Method, a foundation was laid for selecting the contact type in analyzing contact stress of double circular arc spiral bevel gearing;Finally, through the connection port of PARASOLID between UG software and ANSYS/LS-DYNA software, the three-dimension solid model of double circular arc spiral bevel gearing obtained above in UG was imported into ANSYS/LS-DYNA, a finite element analyzing about contact stress of double circular arc spiral bevel gearing was carried out by applying new loading method.

本文首先基于格利森弧齿锥齿轮加工原理及切齿啮合过程中的啮合方程、产形轮齿面方程以及双圆弧弧齿锥齿轮的齿面方程，选用GB12759-1991型双圆弧齿轮基本齿廓为基准齿形，利用Unigraphics软件的建模功能，绘制了有较好适应性的双圆弧弧齿锥齿轮传动三维实体模型。其次，描述了应用有限单元法进行实体接触与碰撞问题算法的公式，研究了有限元分析中的各种接触类型以及双圆弧弧齿锥齿轮接触应力分析中所选择接触类型的依据。最后，通过UG软件和ANSYS/LS-DYNA之间的PARASOLID接口工具包，将UG软件中得到的啮合齿轮模型导入ANSYS/LS-DYNA有限元分析软件，给出一种新的加载方法，进行了双圆弧弧齿锥齿轮传动的接触应力的有限元分析。

I smile at your play with that little bit of a broken twig.

我微笑着看你玩那一段小小的树枝。

They may be produced for almost any shaft angle.

他们可能在制作中几乎任何一个轴角。