查询词典 quantity
- 与 quantity 相关的网络例句 [注:此内容来源于网络,仅供参考]
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By employing the Jordan-Wigner transformation and a modified mean field method, we are able to determine its ground-state quantum phase diagram approximately. The chapter IV is the main part of this Thesis. It contains the main innovations in our work. We propose and study in detail a S=1 Ising chain with the interplay of single-ion anisotropy and dimerization. The main results and innovations are the following: We show that the total number of the zero-component of spins at each site is a conserved quantity. This quantity, which may intuitively called as hole's quantum number, is hidden in the system. We show further that the hole's number in the ground-state is zero; By using the Jordan-Wigner transformation, we map this model onto a series of subsystems described by the spin 1/2 dimerized transverse Ising model. We solve the subsystems exactly, by presenting the exact wave functions and spectra;We show that this system exhibits a series of quantum phase transitions by varying the dimerization strength. We determine the quantum critical points exactly. We also show that the criticality is the same as that of the uniform S = 1/2 transverse Ising chain.
第四章是本文的重点及主要创新内容,我们具体研究了自旋为1的在横向单离子晶格场中的一维二聚化Ising链,我们得到的主要结果和创新之处是:(1)证明了这一模型具有一种隐藏的对称性,即自旋第三分量为零的格点数目是一个守恒量,并证明基态出现在空穴数目为零的子空间中;(2)利用Jordan-Wigner 变换将此模型变换到一系列自旋为1/2的横磁场中的二聚化Ising 模型,并给出了相应严格的波函数及能谱;(3)我们发现系统的基态随着二聚化强度的变化将呈现出一系列量子相变,我们得到了量子临界点的精确位置,并证明其临界性质与自旋为1/2的横磁场中的均匀Ising 链中的临界行为属于同一普适类。
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Exegetes who find metre in the Psalms are of four schools, according as they explain Hebrew metre by quantity, by the number of syllables, by accent, or by both quantity and accent.
谁找到Exegetes米的诗篇有4所学校,根据他们解释希伯来米的数量,由音节数,由口音,或数量和口音。
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Exegetes who find metre in the Psalms are of four schools, according as they explain Hebrew metre by quantity, by the number of syllables, by accent, or by both quantity and accent.
exegetes谁找到米,在诗篇是4所学校,据他们解释,希伯来语米,由数量,由若干音节,由口音,或由双方的数量和口音。
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Before conducting the study, students believed that Heat could not influence gas and liquid volume.Matter didn't have thermal expansion. Metal ring's diameter will shrink after heating. The melting quantity of salt is much quicker and faster than sugar in the same temperature or water. Only metals can conduct heat, but not wood, glass, plastics. The quantity of heat is by steam way disappearing.
一、学童对「物质与热」的迷思概念有:(1)「热对气体、液体体积不会有影响」的概念,(2)听过热胀冷缩的语词,但是对原因不明了,(3)金属双圆环加热后,内环孔的口径会变小,(4)同温度且等量水,盐的溶解量比糖多、也比糖快;(5)木材、塑胶、玻璃不会传热,金属才会传热;(6)以为热量是以水蒸气方式散失,(7)冷气机应安装在高处,冷房效果较佳;(8)误认为金属是良好的保温材质。
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The results show that the methane drainage quantity from the bores perpendicular to face cleat was 1.2 times that of the bores parallel to face cleat in any time and the difference between them becomes more distinct with the drainage time increasing. In the research area, the bores perpendicular to the face cleat was 2.61 times that of the bores parallel to face cleat in maximum drainage quantity and 4.34 times that in drainage effect, and the reasonable time is about 300 days.
结果表明:垂直面割理方向钻孔的抽放量在任何时刻都明显高於平行面割理方向钻孔的抽放量,抽放时间越长,两方向抽放量之间差距越显著;研究区垂直面割理方向钻孔的极限抽放量是平行面割理方向钻孔的2.61倍,抽放率高出4.34倍,合理抽放时间在300d左右。
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This kind of configuration suits the multi-nucleotide chain's purine pyrimidine alternate area. in 1989, the American scientists with scanning tunnel electron microscope law visual observation double helix DNA double helix DNA ︰ in 1952, Austrian lineage US biology chemist Zha Qiefu (E.chargaff,1905-) have determined in DNA 4 kind of basic group content, the discovery gland fat ling and thymine quantity are equal, the bird fat ling and cytosine quantity is equal.
这种构型适合多核苷酸链的嘌呤嘧啶交替区。1989年,美国科学家用扫描隧道电镜法直接观察到双螺旋DNA 双螺旋DNA︰1952年,奥地利裔美国生物化学家查伽夫(E.chargaff,1905—)测定了DNA中4种碱基的含量,发现其中腺膘呤与胸腺嘧啶的数量相等,鸟膘呤与胞嘧啶的数量相等。
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In order to present the strategy that satisfy risk requirement, this paper presents a new method to bid block electric quantity and price. The method analyses MCP forecasted error at first, and then calculate its probability distribution. At last, the VaRs of error under different confidence are obtained, which could guide IPP to submit block electric quantity and price.
为了制定满足风险要求的这一策略,从发电企业的角度出发,通过分析历史预测出清价的误差,统计其概率分布,最后得到误差在不同置信度下的VaR值,并且通过VaR值来指导发电企业进行段电量和段电价的申报。
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This study mainly focused on the water resource and environmental crisis, which are all caused by agricultural irrigation in Inner Mongolia irrigation area. Based on the balance of total water quantity between ground water, underground water and soil water, a study was made on the water quantity varieties in the headraces and offtakes, and the affection of the water cycle under the human activities was quantitively caculated.
针对引黄灌区所面临的水资源问题及灌溉引起的环境问题,以内蒙古河套灌区为研究对象,从灌溉引水、用水、排水之间的转化关系为切入点,以地表水、土壤水和地下水之间的水量平衡理论为基础,定量研究河套灌区在人类影响条件下的水循环特征。
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The Dalian development zone took national one of first batch of development zones, the open degree enlarges unceasingly, each place work personnel inrushes seeks the work post, enters the development zone the work personnel quantity to assume the sharp-rising trend, the work children's quantity also climbs along with it.
大连开发区作为全国第一批开发区之一,开放程度不断加大,各地务工人员涌入寻求工作岗位,进入开发区的务工人员数量呈直线上升趋势,务工子女的数量也随之攀升。
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The results show that the rate of heating decreases due to the growth of oxidation layer in soaking process when the thermal resistance between gas and slab increases. The quantity of loss of iron scale increases with the increase of the coefficient of air consumption under the condition of certain soaking temperature. When the coefficient of air consumption is certain, the quantity of loss of iron scale increases with the increase of soaking temperature rapidly. The results of numerical simulation is consistent with experimental ones, and the error is very small within the range of soaking temperature in CSP line.
研究结果表明:在加热过程中生成的氧化层增大了换热热阻,使钢坯的加热速度减小;钢坯氧化烧损量随加热速度的增大而减小;当达到同一特定的均热温度时,钢坯氧化烧损量随空气消耗系数的增大近似呈线性递增;当空气消耗系数一定时,钢坯氧化烧损量随均热温度的提高而急剧增加;数值计算结果与实验结果变化趋势一致,并在CSP均热温度范围内较吻合。
- 推荐网络例句
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The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.
主要做了如下几个方面的工作:对伸臂位于顶部的单层框架—筒体模型进行分析,提出了等效转动约束的概念和转动约束刚度的表达式。
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Male cats normally do not need aftercare with the exception of the night after the anesthetic.
男猫通常不需要善后除了晚上的麻醉。
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Its advantage is that it can be used in smaller units.
其优点在于可以在较小的单位中应用。