比
- 与 比 相关的网络例句 [注:此内容来源于网络,仅供参考]
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To estimate the high signal to noise ratio in every recorded trace using quantitative method and erase the recorded traces with low signal to noise ratio so as to form a standard trace with high signal to noise ratio.
在形成标准道时,利用定量估计信噪比的方法,对每个记录道分段进行信噪比估计,剔除信噪比低的记录段从而形成高信噪比的标准道。
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The above method can be used as a general method of determining molecular weight distribution of polymers.4.Solid-state ~1H wide-line NMR and ~(31)p magic angle spinningNMR were applied to a series of PEI/DNA complex samples with different PEI molecular weights and nitrogen/phosphatemolar ratios,in order to disclose the influence of various structural factors on the interactions and morphology.The results of ~1H NMR spectra showed that the linewidth of the PEI signal was greatly broadened with increasing the N/P ratio.Meanwhile,in the ~(31)p M_AS experiment,the signal was found to shift upfield with the increase of the N/P ratio.Both ~1H and ~(31)P NMR experiments demonstrated that the interaction between two constituents and subsequently the morphology of the complexes vary with the N/P ratio.
首次将固体核磁共振应用到聚合物/DNA复合物体系,观察复合物体系中不同N/P比对其相互作用和相结构的影响,研究表明N/P比的变化对聚乙烯亚胺/DNA基因递送体系分子水平上相互作用有着很大的影响;另外,还发现不同分子量的聚乙烯亚胺聚合物载体在N/P比为3的情况下对复合物中DNA的微观尺度没有明显影响;通过氢的自旋扩散实验,首次测得在PEI/DNA复合物体系中DNA相尺寸的大小,并发现在体系中N/P比达到3以上的复合物中DNA和PEI达到了分子水平上的相容。
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Based on the model, the metabolic bioreaction rates such as the specific substrate consumption rate, the specific growth rate, the specific acetyl-CoA formation rate as well as the specific oxygen uptake rate are obtained.
利用该模型可以解得比碳源消耗速率、比生长速率、比乙酰辅酶A生成速率、比氧消耗速率等关键的反应速率。
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If a Savgha of bhikkhus comprising a chapter of even one less than twenty should reinstate that bhikkhu is not reinstated and those bhikkhus are censurable.
即使只差一个而不足二十位的比丘僧团为该比丘出罪的话,该比丘未出罪,而且那些比丘应该被呵责。
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If a Savgha of bhikkhus comprising a chapter of even one less than twenty should reinstate that bhikkhu is not reinstated and those bhikkhus are censurable.
即使只差一个而不足二十位的比丘僧团为这位比丘出罪的话,这位比丘未出罪,而且这些比丘应该被呵责。
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To be different from the already chloromethylation catalyst, it has a certain amount of moisture wet, which will not produce huge amounts of doughtic cancerogenic chloromethyl methyl ether during and after the reaction.4,4\'-bisbiphenyl, 1,4-bisbenzene, 1,4-bis(chloro- methyl)-2,5-dimethylbenzene, 1,5-bis-2,4-dimethylbenzene, 4-(chlor- omethyl)-1,2-dimethylbenzene, 1,2-bis-4,5-dimethylbenzene, 5,8-bis-1,2,3,4-tetrahydronaphthalene, 3,3\',5-tris-4,4\'-bisbiphenyl and 3,3\', 5,5\'-tetrakis-4,4\'-bisbiphenyl were synth- esized by using this new catalyst. Results indicated that when the reaction temperature was 55~60℃, the reaction time was 12h, the catalyst which consists of the concentration of 80%H_2SO_4, HAc and Lewis acid, the amount of Lewis acid 0.15 mol(nLewis:nbiphenyl=1.5:1), yield of biphenyl chloromethylation product 4,4\'-bis(chrolomethylbiphenyl can reach a maximum 85%.
采用这种催化体系完成了4,4′-二氯甲基联苯、对二氯甲基苯、1,4-二氯甲基-2,5-二甲基苯、1,5-二氯甲基-2,4-二甲基苯、4-氯甲基-1,2-二甲基苯、1,2-二氯甲基-4,5-二甲基苯、5,8-二氯甲基-四氢萘、3,3',5-三氯甲基-4,4'-二甲基苯和3,3',5,5'-四氯甲基-4,4'-二甲基苯的合成,结果表明:在反应条件为:反应温度55~60℃,反应时间12h,选择80%H_2SO_4、冰醋酸和Lewis酸为催化剂,反应最佳反应Lewis酸用量是0.15mol(和原料比为1.5:1),反应效果最好,联苯氯甲基化产物(4,4′-二氯甲基联苯)收率为85%;在反应条件为:反应温度70℃,反应时间8h,80%H_2SO_4、冰醋酸和Lewis酸为催化剂,反应最佳反应Lewis酸用量是0.1mol(和原料比为1:1)时,反应效果最好,苯的氯甲基化产物收(来源:ABd0C论文eded网www.abclunwen.com)率为75%;在反应条件为:在反应条件为:反应温度40℃,反应时间10h,60%H_2SO_4和Lewis酸为催化剂,反应最佳反应Lewis酸用量是0.1mol(和原料比为1:1)时,反应效果最好,对二甲苯氯甲基化产物(1,4-二氯甲基-2,5-二甲基苯)收率为78.5%;在反应条件为:反应温度35℃,反应时间10h,60%H_2SO_4、冰醋酸和Lewis酸为催化剂,反应最佳反应Lewis酸用量是0.1mol(和原料比为1:1)时,反应效果最好,间二甲苯氯甲基化产物(1,5-二氯甲基-2,4-二甲基苯)收率为81.5%。
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Those who have lived and followed the course of events in an intelligent manner during the pontificates of Pius IX, Leo XIII, and Pius X cannot fail to be impressed with the titles given to each by the prophecies of St. Malachy and their wonderful appropriateness: Crux de Cruce Pius IX; Lumen in caelo Leo XIII; Ignis ardens Pius X. There is something more than coincidence in the designations given to these three popes so many hundred years before their time.
那些居住和遵循了事态的发展过程中一种智能的方式在pontificates的比约九,利奥十三世,和比约X可以不能不留下深刻的印象,与职称给每所预言的圣malachy和他们精彩的适宜性:症结德cruce比约九;腔caelo利奥十三世; ignis ardens比约十,有一些东西多的巧合,部队番号给这三个教皇这么多百年几年前,自己的时间。
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The results showed that karyotypic type of Ya01-21was 2n=104=100m+4sm(4SAT), Chromosome length ratio of the longest and the shortest 4.25, the average arm-ratio 1.35, belonging to 2C type of chromosome. Molecule identified combine with chromosome studied indicated that Ya01-21 was a progenies of Erianthus arundinaceum. following the law of n+n; ITS identify showed that Ya01-21 is a progenies of Erianthus arundinaceum, the somatic chromosome karyotypic type of Ya01-36 was 2n=132=130m+2sm, Chromosome length ratio of the longest and the shortest 3.94, the average arm-ratio 1.27, belonging to 2B type of chromosome, combining the advance of characters the law of 2n+n can be resumed.
研究结果表明,崖城01-21的体细胞染色体核型公式为2n=104=100m+4sm(4SAT),最长与最短染色体的长度比为4.25,平均臂比1.35,染色体属2C型,分子鉴定结合细胞学研究认为其为斑茅的真实后代,其染色体遗传为n+n;崖城01-36经ITS签定为真实杂种,其体细胞染色体核型公式为2n=132=130m+2sm,最长与最短染色体的长度比为3.94,平均臂比1.27,染色体属2B型,结合其性状的进展,推断亲本向其传递染色体可能以2n+n的方式进行。
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That in female was Uu, Ng, Mh, eumycetes, Trichomonas and Ct in descending sequence. Constituent ratio of eumycetes and Trichomonas in female was higher than that in male (x^2=50.0l, P.001), while that of NG was higher in male (x^2=13.86, P.01), and mixed infection rate was higher in female (x^2=6.98, P.05). Conclusion Ng and Uu were the common pathogens of genitourinary infection in male, while eumycetes and Uu were the common pathogens in female.
结果 125例男性病人病原体感染构成比由高到低依次为Uu、Ng、Mh、霉菌、Ct和滴虫;l96例女性病人病原体感染构成比由高到低依次为Uu、Ng、Mh、霉菌、滴虫和Ct,男女感染病原体比较,女性霉菌和滴虫的感染构成比高于男性(x^2=50.01, P.00l),男性淋球菌感染构成比高于女性(x^2=1386,p.01),混合感染率女性高于男性(x^2=6.98,P.05)。
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The leaf mass per unit area decrease gradually with the light regimes bringing down. The leaf of Fatsia japonica changes obviously, the other three species change obviously neither under 24%daylight or 6%daylight, but under 58%daylight dose.
四种植物的比叶重均随光照强度的减弱而减小,八角金盘的比叶重变化显著,其它三种植物的比叶重在24%自然光强下和6%自然光强下变化均不显著,但同58%自然光强下的比叶重相比,变化较显著。
- 推荐网络例句
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The split between the two groups can hardly be papered over.
这两个团体间的分歧难以掩饰。
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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。
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The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.
聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力