成对的
- 与 成对的 相关的网络例句 [注:此内容来源于网络,仅供参考]
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The DSC results showed that calcium carbonate,sodium benzoate and terephthalic acid were the nucleating agents of polypropylene with high thermal stability of the nucleating effect,while the thermal stability of nucleating effect of pimelic acid,suberic acid,azelaic acid,and the two component nucleating agents suberic acid/calcium carbonate and azela...
研究了碳酸钙、苯甲酸钠、对苯二甲酸和脂肪二元酸:庚二酸、辛二酸、壬二酸及其与碳酸钙组成的双组分成核剂对聚丙烯结晶成核效果的热稳定性。
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By azo compound became chromophore monomer disperse red -19, and through Sulfonyl of the compound was synthesized by the C, and through 1HNMR its structure was characterized, the results show that the synthesis of compounds C of very high purity, synthetic polymers can meet at the request of the monomer, but also of the compound D, through 1HNMR its characterization, showed that high purity compounds D, is expected to be functional after the adoption of To all the excellent performance PEEK electro-optic polymer materials.
本文通过偶氮化合成了生色团单体分散红-19,并通过磺酰化反应合成得到了化合物C,并通过核磁共振氢谱对其结构进行了表征,结果表明,所合成的化合物C的纯度非常高,完全能满足聚合物合成时对单体的要求,同时也合成了化合物D,通过核磁共振氢谱对其结构表征,显示化合物D纯度很高,应有望通过后功能化合成出各种性能优良的聚醚醚酮电光高分子材料。
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Methods MR Perfusion Weighted images was performed in 47 patients with meningiomas followed by conventional imaging.Results The mean rCBV values of angioblastic was the highest in the parenchyma of tumor.
对47例脑膜瘤病人行MR灌注成像检查,对5种亚型的良性脑膜瘤的MR灌注成像进行分析,并与非典型性及恶性脑膜瘤进行比较。
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Materials and Methods: Six patients with left frontal lobe tumors (4 gliomas, 1 germinoma, 1 intra-axial cavernoma) close to Brocca and Wernicke language areas were studied. BOLD and DTI were performed on a 3.0T magnet GE Signa Excite~(? HD_X, BOLD using the word association paradigm developed in Part I and DTT technique developed in PartII. Language activation maps and fiber tracts were superimposed upon high resolution T1 weighted anatomic images of the brain for displaying the relationship between tumor, language functional areas and white matter tracts.
材料和方法:使用GE 3.0 T Singa Excite~ HD_x超导磁共振成像系统,对6例左侧语言相关脑区肿瘤(Ⅲ-Ⅳ级胶质瘤1例,Ⅱ级胶质瘤3例,生殖细胞瘤1例,海绵状血管瘤1例)行BOLD-fMRI及扩散张量成像扫描,BOLD应用语义相关判断作为任务刺激,所有数据进行离线后处理,应用AFNI软件处理BOLD图像,观察语言功能皮层的激活;DTT采用日本东京大学的Volume-one1.56和diffusion TENSOR Visualizer 1.5进行纤维束成像处理。
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This thesis investigates the profile extraction and shape optimization on the result of topology optimization of planar compliant mechanisms. The main context includes the following work:(1) summarizing and analyzing the recent research status, some harvest and unsolved problems;(2) analyzing the conceptual design of planar path-generating compliant mechanisms and its mathematical model and tools;(3) Modifying the method of density contour as the method of profile extraction, and developing a method to optimize the density function in the profile extraction according to the requirement of the design of compliant mechanism;(4) developing a method to abstract the compliant mechanism into a form of links and joints by using the principle of connectivity on topology;(5) developing a method of shape optimization of planar path-generating compliant mechanisms, by representing the profile of the abstracted compliant mechanism as simple curves such as straight lines and arcs, establishing the models of the size optimization of the parameters of these curves, so that the compliant mechanism has a machinable shape;(6) At last, proving the feasibleness and effectiveness of the design method by making simulation design and validating it in FEA software.
主要工作包括:(1)分析了柔顺机构拓扑优化和形状优化的研究现状,分析了目前柔顺机构的研究重点、主要成果和尚未解决的问题;(2)分析了基于SIMP的柔顺机构概念设计方法及其相关工具和模型;(3)针对柔顺机构轮廓提取的特殊要求,提出了密度等值线法的改进方案,对密度函数插值点密度值进行优化,提出优化模型和选择优化算法;(4)根据轨迹输出平面全柔顺机构自身的形状特点,提出了轨迹输出平面全柔顺机构的抽象方法,即应用拓扑学上的连通性原理将柔顺机构抽象成杆件和结点形式,并对相应的数学原理进行了证明;(5)提出了平面全柔顺机构的形状还原和尺寸优化方法,对抽象的柔顺机构进行还原,将其轮廓还原成简单曲线的连接,从而建立尺寸优化模型,对机构进行尺寸优化设计,在得到可加工的机构轮廓的同时又能对关键部位进行特别处理;(6)进行了柔顺机构的数值仿真设计,并将所得设计结果导入商用有限元软件中进行仿真实验,证明了设计方法的可行性和有效性。
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If a quicksand, then he can Interphalangeal passage if a wind, then even if he can not use network will also network if a-heart, then Heaven and Earth will be on your tolerance, if your heart be healed, then you will be unfair to the World; If you get you want, then you will be satisfied; if you are in the shadow of life, then I can light up the sun
如果成了流沙,那么他就可以从指间流逝;如果成了一阵风,那么他就算用网也网不住;如果把心变成仁,那么天地也会对你宽容;如果你的心得到抚平,那么你是否还会对世不公;如果你得到你想得到的,那么你是否会得到满足
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It was iound in the experiment that the glass fiber made crystal peak temperature raise 8~9 ℃, Crystal original taper to be large, spherocrystal size small, it -acted the function of hetero-geneous nucleation for polypropylene . High density polyethylene has plasticizing efficancy and combined effect of hetero-geoeous nu...
试验表明PP/GF/HDPE复合物的结晶峰温度升高8~9℃,结晶起始斜率变大,球晶几何尺寸明显减小,复合物中的玻璃纤维起到异相成核作用,高密度聚乙烯对聚丙烯有增塑作用并对异相成核具有协同效应。
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From the middle to the south in the research area, the compaction, the pressure dissolves the function and the structure disruption intensity enlarges gradually, the silicon nature agglutinates the content to increase gradually, and the corrosion function intensity reduces gradually. The diagenesis stage is carried on according to the division standards of secondary enlargement degree, pellet contact type as well as porosity type, the authigenic mineral characteristic, agglutinates, the diagenesis of Xujiahe formation is thoughted degree to be intense, which already entered the late diagenesis stage A sub-stage.
从研究区中部向南部,压实、压溶作用和构造破裂作用的强度逐渐加大,硅质胶结物含量逐渐增多,溶蚀作用强度逐渐降低;并根据成岩作用类型、自生矿物特征、胶结物的次生加大程度、颗粒接触类型以及孔隙类型等划分标准,对须家河组进行了成岩作用阶段划分,认为研究区须家河组成岩作用程度强烈,已经进入晚成岩作用阶段A亚期。
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Adding both NAA and BA to medium would promote the percentage of callus formation of tip and podding without root, but would inhibit the podding with root.
同时添加NAA及BA对子房柄形成愈伤组织及不发根结荚有加成的促进作用,但对发根结荚则有加成的抑制作用。
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Study of peripheral nerve lesions and the effects of the recipe of supplementing Qi and activating blood circulation on it in streptozotocin-induced diabetic rats: It was showed that the weight, MNCV and SNCV were significantly reduced, H reflex were significantly prolongated, the level of blood sugar were significantly increased in diabetic rats compared to normal rats at 1 week, 3 week and 5 week after STZ injection (p.05), some changes of the sciatic nerve structure were occurred after 5 weeks of the diabetic progress.
STZ大鼠周围神经功能变化及益气活血方对其影响的实验研究:STZ诱发的糖尿病大鼠,成模1W后体重减轻、血糖升高、SNCV、MNCV减慢、SNCVamp减小、SNCVlat及H反射延迟,以上各项指标与对照组相比差异显著(P均。05):成模5W后上述改变更为明显。成模5W后大鼠坐骨神经纤维出现髓鞘变性、融合、部分神经纤维变性等形态改变。
- 推荐网络例句
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Plunder melds and run with this jewel!
掠夺melds和运行与此宝石!
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My dream is to be a crazy growing tree and extend at the edge between the city and the forest.
此刻,也许正是在通往天国的路上,我体验着这白色的晕旋。
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When you click Save, you save the file to the host′s hard disk or server, not to your own machine.
单击"保存"会将文件保存到主持人的硬盘或服务器上,而不是您自己的计算机上。