类并
- 与 类并 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Furthermore, the structure of drift trammel net, set longline of baited hooks and jig and their fishing methods were described.(2)The fishing gears in Hejiang section were divided into drift trammel net, set longline and jig according to the fishery status in Hejiang section."Number of fishing boat day" was selected as the unit of fishing effort.
2根据合江江段的渔业现状,将该江段的渔具分为三层流刺网、饵钓、滚钩和其它偶见渔具四类,以"船·天"作为捕捞努力量的单位,用单位捕捞努力量渔获量乘以年捕捞努力量分别得到这四类渔具的年渔获量,并将这四类渔具的年渔获量相加估算出合江江段1999-2002年的渔获量分别为104563.464kg、65564.231kg、123684.966kg和107285.272kg。
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The paper tries to use Weka to analyze the structure of urban construction land use and gets some useful results.Some means will be used,containing many algorithms of associate,cluster and regression.(1)It has been get from associate that there is relativity in different kinds of land.(2)All cities have been divided into 5 types by cluster.And the spacial distributes characteristic of 5 types is analyzed.(3)It has been get from regression that there is relation in land structure and city size.
尝试使用Weka软件,运用其关联分析、聚类、回归方法中的不同算法对城市建设用地结构进行分析,获取了一些有益的结果:(1)通过关联分析得到不同用地间的相关性;(2)通过聚类将全国城市分为5类,并分析了其空间分布特征,即存在均匀分布,又呈现相对聚集现象;(3)通过回归分析得知用地结构与城市规模之间存在一定联系。
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The property of the lowest excited triplet states of xanthone in acetonitrile has been investigated by using time-resolved laser flash photolysis at 355nm. The transient absorption spectra and the quenching rate constants of the excited xanthone with several amines have been obtained.
用时间分辨的激光闪光光解的方法在乙腈溶剂中研究了呫吨酮的激发三重态的性质,并得到了呫吨酮激发三重态和胺类、醇类以及酚类反应的瞬态吸收光谱和猝灭速率常数。
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Then from the perspective of the hearer, the acceptive characteristics of the rhetoric of double meanings are uncovered from the acceptive order, acceptive type and acceptive degree. Mainly according to cooperation principle and relevance theory, the judgment and recognition of the rhetoric of double meanings, the regularity taking on when its deep meaning is revivified and cognized are induced; and at the same exhibiting specifically the meaning reasoning process of the acceptor of the rhetoric of double meanings of polysemy, synonymy, and antonym.
以&合作原则&和关联理论为主要依据,对双重意义修辞的判断和认定,对其语内意义的还原和认知等呈现的规律性进行了归纳,并具体地展现了接受者对于多义类、同义类和反义类双重意义修辞的意义推理过程。
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After a further analysis based on the empirical results,a trial probe on the cognitiveprocessing mechanism of the problem representation of the word problem in two types of MLDwas made by the author.The MRD performed much poorer than the MLD only in the mostdifficult equation listing of word problem and the medium and most difficult problemrepresentation of word problem,which showed no difference in computation and comprehensionof simple meaning of the problem,but the gap between two types of MLD became wide as afunction of difficulty and cognitive loading.It indicated that the MLD only had some advantage over MRD for they used more cognitive skills to solve the problem.
基于以上实验的结果,对两类数学困难小学生的应用题问题表征的认知机制作如下推断:混合型数学困难学生仅在高难度水平的应用题列式成绩和中高难度水平应用题问题表征水平上比单纯型数学困难学生得分显著低下,表明两类数学困难小学生在计算能力与理解简单题意的能力上并无差异,但随着难度提高,认知负荷加重,两类数学困难学生在应用题解题上的差异得以突显,表明当需要运用更多的认知能力解决问题时,单纯型数学困难学生比混合型困难学生更具优势。
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This thesis includes five parts as follows.1. The backgrounds and some relative concepts of this work are briefly introduced. The photochemistry of benzamides and compounds with thiourea functional group is also concisely reviewed.2. Total of fourteen benzamides with different substituted groups have been synthesized and structurally characterized. Better photoreaction time for that kind of compounds at given concentrations is confirmed by tracking its'UV spectrum and GC chromatogram. A representative dibenzophenone photoproduct has been determined by X-ray crystallography. The mechanisms of photoreaction of benzamide have been proposed.3. Total of seven N-chloro(phenylmethylenebenzenamines with different substituted groups and sixty-one thiourea derivatives have been synthesized and structurally characterized.
论文的主要内容如下:1、简要介绍本论文工作的研究背景,并对苯甲酰胺和具有硫脲官能团类化合物的光化学研究进展进行简要的总结。2、合成与表征了14个具有不同取代基的苯甲酰胺类化合物,利用紫外光谱和气相色谱确定了此类化合物较佳光照时间,测定了一个具有代表性光解产物的单晶结构,提出了苯甲酰胺类化合物的光反应机理。3、合成与表征了7个带有不同取代基的氯代苯甲酰亚胺中间体及61个硫脲衍生物,测定了两个具有代表性化合物的单晶结构。
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In microwave condition Ce~(4+) may oxidize sulfur compound such as the benzothiophene mainly in diesel fuel into sulfonea for the first time. By choosing proper solvent DMF to extract sulfonea, thus in microwave condition sulfur content in diesel fuel is reduced from 554ppm to 96ppm, up to 82.7% desulfurization ratio.
3微波条件下首次使用Ce~(4+)来氧化柴油中的硫化物并把这类硫化物氧化成砜类化合物,再选用合适的溶剂DMF,把这些砜类化合物通过萃取的方法除去,微波条件下的氧化脱硫可以将柴油中的硫含量从554ppm降到96ppm,达到82.7%的脱硫率。
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Under supersonic condition Ce(superscript 4+) may oxidize sulfur compound such as benzothiophene in diesel fuel into sulfonea. By choosing a proper solvent to extract sulfonea, the sulfur content in diesel fuel is reduced from 554 mg/L to 25 mg/L with a desulfurization ratio of 95.5% and the sulfur content of diesel oil by oxidization is in line with the quality standard of diesel oil in World Fuel standard Ⅲ.
首次超声条件下使用Ce(上标 4+)氧化柴油中的硫化物,并把这类硫化物氧化成砜类化合物,再选用合适的溶剂将这些砜类化合物通过萃取方法除去,使柴油中的总硫含量从554mg/L降到25mg/L,达到了95.5%的高脱硫率。
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In supersonic condition Ce~(4+) may oxidize sulfur compound such as benzothiophene mainly in diesel fuel into sulfonea for the first time. By choosing proper solvent to extract sulfonea, thus sulfur content in diesel fuel is reduced from 554mg/L to 25mg/L, up to 95.5 % desulfurization ratio and the sulfur content of diesel oil by oxidization meet to the quality standard of diesel oil in World Fuel standard III.
2在超声条件下首次使用Ce~(4+)来氧化柴油中的硫化物并把这类硫化物氧化成砜类化合物,再选用合适的溶剂DMF,把这些砜类化合物通过萃取的方法除去,从而将柴油中的总硫含量从554ppm降到25ppm,达到95.5%的高脱硫率。
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Through theoretical modelling and numerical simulation, the dynamic matching relationship is studied on two types of automatic action systems of caseless rifle s.
本文通过对无壳弹枪的两类自动机结构的理论建模和数值仿真,对这两类结构的动力学参数匹配关系进行了深入细致的分析研究,得出三发点射状态下自动机各参数变化对武器性能的影响规律,并对两类自动机进行了分析比
- 推荐网络例句
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I didn't watch TV last night, because it .
昨晚我没有看电视,因为电视机坏了。
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Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.
今年以来,在北京的很多小区里,电梯液晶电视被撤了下来。
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I'm running my simile to an extreme.
我比喻得过头了。