等环的
- 与 等环的 相关的网络例句 [注:此内容来源于网络,仅供参考]
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According to the differences of the materials, there are many methods of synthesis for benzofuranol , such as the pyrocatechol method, the cyclohexanone method, the o-chlorophenol method, the nitrophenol method, the methoxy phenol method, and so on.
根据原料的不同,呋喃酚合成方法可分为邻苯二酚法、邻氯苯酚法、环己酮法、硝基苯酚法、愈创木酚法、邻异丙基酚法、羟基苯异酮法等,文章对前几种较常见的合成方法的原理及工艺进展进行了详细的综述,并展望了呋喃酚合成方法的发展趋势。
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The maximal fluorescence intensity of the ring is proportional to the content of quinidine sulfate.An SOR method for the determination of quinidine sulfate was established in the range of 0.2 ~1.4×10~(-12) mol,and the limit of detection(3σ) was 2.6×10~(-14)mol.
研究表明,只要满足液滴与表面的接触角不为零、液滴与表面的接触线被固定、溶剂能挥发等3个条件,固载表面上液滴中的溶质将在固载表面的接触线上聚集而形成一个自组装成环。
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The coupling of ancillary device control with reheater is analyzed.
根据燃气轮机数学模型具有多变量、强干扰、参数时变的特点采用单神经元控制器对转速进行闭环控制,分析了回热器等辅助设备控制的耦合关系,对软启动斩波控制、电池控制和逆变、并网控制的工作原理进行了详细的介绍,并按照工况的需求提供了控制方法。
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The algorithm must exploit the trait of environmental model, replan motion according to the change of environment.
文中的主要研究工作和贡献如下:(1)未知环境的覆盖规划中,采用改进的滑动算法,并结合环航和随机行走等策略,使得多机器人队伍能够一边探索障碍物信息,一边增量的构建构型空间。
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The paper analyzes the main problems related to resource and env ir onment in the ar-eas of The Bohai Sea Rimland,Yangtze River Delta and Pearl R iver Delta through a com parative method.The regional differentiation character s that the water resource shortage is getting more se-rious from south to north ,the farm resource waste is getting worse from north to south and envi-ronment al pollution is increasing together with the development of regional economy i n the east-ern coastal areas in China are put fo...
采用比较研究方法,分析了环渤海地区、长江三角洲地区和珠江三角洲地区的主要资源环境问题,提出了我国东部沿海地区水资源短缺由南向北明显加剧、耕地浪费状况由北向南趋于恶化、环境污染程度与经济发展水平同步增长的区域分异特征,并对产业结构演进,特别是工业化过程中地区经济发展与资源环境的相互关系进行了探讨,归纳并修正了二者之间互动模式,提出了建立资源友好型的产业体系、加强资源环境管理规制等优化对策。
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Disk height index of intervertebral disks on X-ray films, areas and average T2 relaxation time of high intensity zone of disks on T2-weight MRI and histological score on pathological sections (HE staining, Masson staining and safranin O-fast green staining) were measured at 2 months, 4 months and 6 months after operation.
术后2、4、6个月时对正常及模型椎间盘观察X线片上的椎间盘高度指数、MRIT2加权相上的椎间盘高信号区的面积和平均T2弛豫时间、椎间盘纤维环损伤区的形态学变化、组织病理切片(HE染色、Masson三色胶原染色和番红O-固绿染色)椎间盘组织形态学变化、生物化学变化和组织学评分等指标。
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Based upon analysis of the factors influencing the compaction quality of backfilled soil such as compaction work ,moisture content of soil and thickness of soil layers,two dry density inspection methods are introduced: ring simpler method and sand cone method,in order to ensure compaction quality of backfilled soil.
介绍了工程特点,对压实功、土的含水量和每层铺土厚度等影响回填土压实质量的因素进行了分析,并介绍了环刀法和灌砂法两种回填土干密度的检测方法,以确保回填土的压实质量。
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In the second part, other types of chiral selectors were used for enantioseperation of thioridazine in order to compare with the MI-S-b-CD system.
第二部分则以其他种类的环糊精等对掌选择剂来分离分析物的对掌异构物,探讨不同对掌选择剂对分析物对掌异构化动态学的影响,与MI-S-b-CD分离的结果做比较。
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Second, using DBU as the base for enolization of propargylic esters of unsaturated acids 18e-k, we developed a tandem Ireland-Claisen rearrangement /isomerization reactions. It has been shown that the reaction sequence affords triene molecules 42a-b and 43a-b in moderated to high yields. Interestingly, with allyl hexa-3,5-dienoates 18i-j as the substrate, the rearranged products underwent further aromatization to give uniquely substituted benzyl acids 44a-b.
其次,以含有活泼质子的烯酸炔丙酯18e-k为底物,在DBU为烯醇化碱、TMSCl为硅试剂的条件下,底物18e-h发生了Ireland-Claisen重排/异构化串联反应,得到完全共轭的三烯类化合物42a-b及43a-b;而以己二烯酸炔丙基酯18i-j为底物时,重排/异构化后的产物进一步发生电环化等反应最终得到芳构化产物——取代苯甲酸类化合物44a-b。
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Methods: Mice bearing in vivo transplanted tumor-H22 hepatic carcinoma were used to evaluate the drug"s activity of anti-tumor and GAPSGF"s efficacy enhancing effect by calculating the ratio of antitumor and q. HE dyeing was applied to observe the tumor"s morphological changes after the anti - tumor drug. It is observed the change of theperipheral white blood cells in serum and the body weight to analyze the GAPSGF"s toxicity reducing effect on the anti - tumor drug-Cytoxan. Applying ELISA method to observe the change of IL-2 in serum ,Applying carbon clearance method to test the function of uninuclear phagocyte,took the weight of the spleen and thoracic gland, analyzed the mechanism — efficacy enhancing and toxicity reducing of GAPSGF.
构建体内动物移植性H_(22)肝癌模型,通过计算抑瘤率与q值来分析药物的体内抗肿瘤活性,判断树舌多糖GF注射液的增效作用;采用瘤组织常规HE染色观察药物作用下的肿瘤细胞形态变化;观察外周血WBC数和体重改变来分析树舌多糖GF注射液对环磷酰胺抗肿瘤的减毒作用;采用ELISA法测定血清IL-2、小鼠碳粒廓清法测定单核吞噬细胞功能、取胸腺与脾脏称重测定脏器指数等以分析树舌多糖GF注射液增效减毒的作用机制。
- 推荐网络例句
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Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".
歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车,和一双合并为一移交&整个lotta爱&。
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This is Kate, and that's Erin.
这是凯特,那个是爱朗。
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Articulate the aims, objectives and key aspects of a strategic business plan.
明确的宗旨,目标和重点战略业务计划。