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Its principle is that if absolute value of parent coefficient in coarse layer are larger magnitude, absolute value of son coefficients axe possibly larger. Therefore, it presents edge more possibly.
在不同层间,如果低分辨率下的父系数绝对值大,则在高分辨率下四个相应的子系数的绝对值可能性也大,则其所代表地图像边缘信息可能性越大。
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The relations between absorption efficiency and stripping factor in cocurrent and countercurrent flow were obtained.
对填料吸收塔在低浓度操作条件下的吸收率进行了分析和计算,得出了并流和逆流两种情况下吸收率与脱吸因数的关系,并对最大吸收率进行了讨论,得出了它的解析计算方
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With wireless Internet access capability, that is, the need to support GSM or GPRS network under the CDMA network under the 3G or CDMA 1X network.
具备无线接入互联网的能力,即需要支持GSM网络下的GPRS或者CDMA网络下的CDMA 1X或者3G网络。
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Theresults indicated that the initial desorption rate of As was higher than As, but thefinal desorption percentage of As was two times higher than As; that in therange of pH(6.5-8.5), the desorption of As was the lowest(pH=6.5),and thepercentage increased with the pH value increasing or deescalating, but for the As,thepercentage increased with the increase of pH; that the supersonic accelerated desoptionof arsenic and the final percentage was lower than non-supersonic; that on the conditionof UV-light ,in a word, it took negative effect to desorption The"reproduced process"has been used in the procedure of regeneration.
实验结果表明,初始阶段,三价砷的脱附率高于五价砷,但最终脱附率三价砷低于五价砷;三价砷、五价砷在不同温度下的脱附实验表明三价砷的最佳脱附温度低于五价砷的最佳脱附温度;在pH=5.5-8.5时,随着pH的增大,五价砷的脱附率具有先减小再增大的趋势,在pH为6.5时脱附率降至最小;在pH=5.5-8.5时,三价砷的脱附率随pH的增大而增大;不论是三价砷还是五价砷的脱附过程,超声波条件都会促进脱附速率(来源:ecABC论a4文网www.abclunwen.com)的增加,并且最终的脱附率要高于无超声波条件下的脱附率;紫外光照条件下,随着光照时间的增加,两种价态砷的脱附率会达到一个较高的值,再降低。总体而言,紫外光照的存在不利于脱附的进行。
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After comparing nonlinear simulation with linear, the results indicate that: Weak nonlinearity has definite and apparent influence on the distribution of acoustic fields and focused gain of array, which cause the distribution of waveform is closer to the array and the focused gain deteriorate ; the strong nonlinearity have a strong waveform aberration, because the other waves of non-fundamental frequency appear . No evident distinction is found in the effects between the oblique propagation and the vertical propagation, though less focused gain and influence caused by strong nonlinear produced by the acoustic diffraction which results in more attenuation in terms of oblique propagation.
将线性条件下的模拟结果与非线性条件下的模拟结果进行比较发现:弱非线性会对声场的分布和阵列聚焦增益产生一定的影响,使得声场分布波形比线性条件下的更加靠近阵列,聚焦效果变差;强非线性会使波形发生更严重畸变,这是由于产生了基频以外的其他频率声波引起的;非线性对斜向传播时声场分布的影响与垂直传播时的影响效果基本相同,但由于斜向辐射时的声波衍射造成的衰减要大于垂直辐射时的,因此聚焦增益和强非线性的影响都将小于垂直辐射时的情况。
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The Trojans advanced in a dense body, with Hector at their head pressing right on as a rock that comes thundering down the side of some mountain from whose brow the winter torrents have torn it; the foundations of the dull thing have been loosened by floods of rain, and as it bounds headlong on its way it sets the whole forest in an uproar; it swerves neither to right nor left till it reaches level ground, but then for all its fury it can go no further- even so easily did Hector for a while seem as though he would career through the tents and ships of the Achaeans till he had reached the sea in his murderous course; but the closely serried battalions stayed him when he reached them, for the sons of the Achaeans thrust at him with swords and spears pointed at both ends, and drove him from them so that he staggered and gave ground; thereon he shouted to the Trojans, Trojans, Lycians, and Dardanians, fighters in close combat, stand firm: the Achaeans have set themselves as a wall against me, but they will not check me for long; they will give ground before me if the mightiest of the gods, the thundering spouse of Juno, has indeed inspired my onset.
& 其时,特洛伊人队形密集,迎面扑来,赫克托耳领头先行,杀气腾腾,像石壁上崩下的一块滚动的巨岩,被泛涌着冬雨的大河从穴孔里冲下,凶猛的水浪击散了岩岸的抓力,无情的坠石狂蹦乱跳,把山下的森林震得呼呼作响,一路拼砸滚撞,势不可挡,一气冲到平原,方才阻止不动,尽管肆虐凶狂。就像这样,赫克托耳最初试图一路冲杀,扫过阿开亚人的营棚和海船,直插海边。然而,当接战对方人群密集的队伍,他的攻势受到强有力的止阻,被硬硬地顶了回来。阿开亚人的儿子们群起攻之,用劈剑和双刃的枪矛击打,把他抵挡回去,逼得他连连后退,步履踉跄。他放开嗓门,用尖亮的声音对着全军喊叫:&特洛伊人,鲁基亚人和达耳达尼亚人,近战杀敌的勇士们!和我站在一起!阿开亚人不能长时间地挡住我的进攻,虽然他们阵势密集,像一堵墙似地横阻在我的前头。我知道,他们会在我的投枪下败退,如果我真的受到神明的驱使,一位最了不起的尊神,赫拉抛甩炸雷的夫婿。
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Through the flue gas and air characteristic analysis in supercharged boiler,the results showed that the value of parameters would increase with the increase of fuel consumption.And volume heat load of the furnace, fuel consumption, heat change between flue gas and convective heating surface and evaporation value would increase with the increase of compression ratio.The heat calculation would be different because of dissimilar thermal calculation in the turbo-compressor when the boiler load was changed.As the boiler load increased,heat loss in the turbo-compressor would increase and the efficiency of the boiler would decrease.The results of the boiler start-up simulation showed that the time of start-up would decrease with the increase of flue consumption ,but instantaneous pressure amplitude would increase.Steam water"s dymamic diversification would be more complex than flue gas"s,and dynamic characters of their parameters would be changed due to different boiler load and disturbance variable,which was shown by results of the simulation when boiler load was changed.
通过分析增压锅炉内的空气、烟气参数特性,发现随着锅炉负荷的增加,空气和烟气的各项参数值都相应的增加;炉膛容积热负荷、锅炉的燃料负荷随着增压比的提高成比例增加;随着增压比的增大,烟气与对流受热面的换热增加,蒸发量随之增加;由于涡轮增压机组在不同负荷下的热力计算不同而造成增压锅炉在不同负荷下的热平衡计算的不同;锅炉增压机组的总的热损失随着锅炉负荷的增加而增加,而增压锅炉的热效率随着锅炉负荷的增加而减少;锅炉启动模拟仿真结果中发现,锅炉启动时燃料量增加,锅炉的启动时间就会减少,但是瞬时升压速度会增加;而动态负荷变化模拟仿真结果中发现,锅炉汽水侧的变化相比烟气侧更为复杂,且在不同负荷和不同扰动量下,烟气侧和汽水侧的重要参数动态特性是不同的。
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On the basis of the concept of perfect quantum gas, a physical model of extreme relativity is established for perfect quantum gas, and also according to the conclusions of the state density of the extreme theory of relativity, the densities of quantum statistics′ particle numbers and energy, the extreme relativity′s result of the enthalpy、internal energy and heat capacity of the perfect quantum gas is obtained under the high temperature by strict theory inference.
在理想量子气体概念的基础上,首先建立极端相对论理想量子气体的物理模型;再根据极端相对论的态密度和量子统计的粒子数、能量的密度结论,通过严格的理论推导,得出理想量子气体在高温条件下的极端相对论性的焓、内能和热容量的结果,并将其热容量与高温条件下的理想量子气体、经典理想气体的热容量对比,指出极端相对论与非相对论两种模型、理想量子气体与经典理想气体两种模型的热容量之间的差异,同时分析这些差异的物理原因在于各自气体模型的态密度以及对应体系的波函数的对称性;最后阐明高温条件下极端相对论理想量子气体的热容量在量子统计方面的先进性及应用前景。
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Finally it clarifies the advance in quantum statistics and the practical prospect of heat capacity of the extreme relativity's perfect quantum gas under high tamperature.
摘 要:在理想量子气体概念的基础上,首先建立极端相对论理想量子气体的物理模型;再根据极端相对论的态密度和量子统计的粒子数、能量的密度结论,通过严格的理论推导,得出理想量子气体在高温条件下的极端相对论性的焓、内能和热容量的结果,并将其热容量与高温条件下的理想量子气体、经典理想气体的热容量对比,指出极端相对论与非相对论两种模型、理想量子气体与经典理想气体两种模型的热容量之间的差异,同时分析这些差异的物理原因在于各自气体模型的态密度以及对应体系的波函数的对称性;最后阐明高温条件下极端相对论理想量子气体的热容量在量子统计方面的先进性及应用前景。
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The main research work of this dissertation is as follows: Based on the chemical reaction engineering theory and the nitrobenzene electroreduction mechanism, the plate and frame electrolyzer was designed and applied to the process of electroreduction nitrobenzene to p-aminophenol. This dissertation measured the residence time distribution data of the electrolyzer by means of the pulse response method and studied the rule of flow pattern along with the current capacity change. Under different conditions ,this dissertation studied the cyclic voltammetry properties of nitrobenzene on different electrodes by means of the dynamic cyclic voltammetry method and the electrode materials applied to the NB electroreduction have been selected primarily.Baseed on the results of cyclic voltammetry tests, this dissertation used p-electrode systems to measure the steady-state- polarization curves of nitrobenzene on different electrodes in H-type diaphragm cell, and obtained each primary factor s influence rule and the exchange current density value of each electrode.And then on the basis of the conclusions of fundamental researchs upword, the effects of influence factors on the the yield of p-aminophenol and the current efficiency,such as electrode material, current density, quantity of electricity circulated, nitrobenzene concentration . sulpuric acid concentration and so on, have been studied in detail in the systems of hign temperature , strong acidity and oxygen-poorthrough a series of electrolysis experiments in this paper.After all using Pb as anode Monel metal as cathode Dupont Nafion 417 cation-exchange membrane as membrane, this dissertation obtained the optimum technological condition: reaction temperature about 85C, current density 500A m-2, sulphuric acid concentration 20%wt.
论文的主要研究工作为:运用化学反应工程理论,结合硝基苯的电还原机理,设计出用于硝基苯直接电还原合成对氨基苯酚实验的板框式电解槽,并利用脉冲响应法测定了该板框式电解槽的停留时间分布数据,研究了流型随流量变化的规律;通过动态循环伏安法研究了硝基苯在不同电极上、不同条件下的循环伏安特性,初步评选出了用于硝基苯电还原的电极材料;结合循环伏安的测定结果,在H型隔膜电解槽中采用三电极体系测定了硝基苯在不同电极上、不同条件下的稳态极化曲线,得到了各主要因素的影响规律及硝基苯在各个电极上电还原的交换电流密度数值;在基础研究结论指导下,采用板框式电解槽,在高温、强酸、贫氧系统中,进行了一系列的电解实验,分别考察了电极材料、电流密度、通电量、硝基苯浓度、硫酸浓度等因素对收率及电流效率的影响,最终选择以蒙乃尔合金电极作为阴极、铅合金为阳极、Dupont Nofion 417阳离子交换膜为隔膜,得到由硝基苯直接电还原制对氨基苯酚的最佳电解工艺条件:反应温度85℃,电流密度500A·m~(-2),硫酸浓度20%wt。
- 推荐网络例句
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I will endeavour to find you some assistance.
我尽力帮你找人帮忙。
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At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.
起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像,后来回台湾,甚至去年在北京,居然也四处看见她的海报,才惊讶她的魅力之大。
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Ah may dee:You are chinese living in a democratic country.
你是居住在民主国家的中国人吧。