查询词典 method of difference

Remove row and column' and 'put a big number' have been used for the first boundary;a continuous Regional Identification Function is used on the basis of non-variant nodal virtual flux method for the free surface boundary;Gauss formula is used to make the curved surface integral of the free surface boundary transformed as the difference between volumn integral and other curved surface integral to calculate the integral item on boundaries, which avoiding finding the position of free surface, while the continuous Regional Identification Function is applied to calculate volumn integral and surface integral;Crout and PCG method is used for solusion.

对于已知水头边界，采用"去行去列法"和"置大数法"进行处理；对于自由面穿过的单元，在固定网格节点虚流量法的基础上，引入连续的区域识别函数；对于非稳定渗流中自由面边界积分项，采用高斯公式将求自由面的面积分转化为求体积分与其他面积分之差，避免了求自由面的具体位置，同时在计算体积分和面积分时采用连续的区域识别函数；在解法上，采用直接解法和PCG法。

1Based on the characteristics of carbonatite reservoir in Sangtamu area, we summarize the type of seismic reflection and the distribution of oil and gas.(2)Through the study of the lateral difference of local amplitude, which can predict the short, unorderly reflective energy gobbet of carbonatite reservior, we study the distribution of carbonatite reservoir with crack.(3)Analyzing the change of the seismic waveform, applying nerve network method to classify the seismic waveform, find the rule of its change, recognizing the change rule of seismic facies.(4)Applying the seismic multi-attribute cross method to study the surface and inner of carbonatite reservoir in buried hill. We first extract the 5 kinds of seismic attribute. Through a series of choices, we find those seismic attributes that are sensitive to the change of carbonatite reservoir.

主要的研究包括：①根据桑塔木碳酸盐岩的储层特点，总结了该区的地震反射特征及油气分布特征；②研究出一种有针对性的地震属性--局域振幅横向差异性，来定量刻画潜山内部"短轴"杂乱反射能量团，预测缝洞型碳酸盐岩内部储层的平面分布规律；③通过对地震波形变化的分析，运用神经网络对地震波形进行有效分类，找出波形变化的总体规律，从而认识地震相的变化规律；④应用交会法地震多属性分析方法，对潜山表层和内部分别提取了5大类40种地震属性，通过一系列分析表层及内幕各自优选出3种、4种地震属性用于进行交会分析。

Basesd on the precipitation difference in Tsaidam Basin of Qinghai Province, three sampling areas, including Geremu, Delinghan and Doulan, were selected, and then three sapmling plots in each sampling area were selected to study the characteristics of plant community which dominated by Ceratoides lateens, Nitraria tangutorum, Tamarix chinensis, Kalidium gracile, Haloxylon ammodendron and Salsola arbuscula respectively. At the same time, the morphological and physiological features of above-mentioned 6 species were measured for probing their drought tolerance. By using the subordinative function method, grey correlative degree analyse and no-weight index comprehensive evaluation method, their drought tolerance were compared as well. The results were showed as follows: The main xeric vegetation types in the desert steppe of Tsaidam Basin were Nitraria tangutorum community, Tamarix chinensis community, Haloxylon ammodendron community, Kalidium gracile+Salsola arbuscula community, Ceratoides lateens+ Haloxylon ammodendron+Kalidium gracile community.

根据青海省柴达木盆地不同地区历年降水量差异，在研究区内选择格尔木、德令哈、都兰3个采样区，每个样区内确定3个采样点(表示为D11、D12、D13、D21、D22、D23、D31、D32、D33)，以样区内唐古特白刺、甘蒙柽柳、梭梭、木本猪毛菜、里海盐爪爪、驼绒藜等6种主要植物为研究对象，通过调查采样地区群落特征，观测植物形态解剖特征，测定植物脯氨酸、可溶性糖、叶绿素、超氧化物歧化酶、过氧化物酶和过氧化氢酶等生理指标，研究了柴达木盆地6种植物抗旱生理特性及抗旱特性，用模糊数学隶属函数法、灰色关联分析和非加权指数评价法分别对6种植物的各个抗旱性指标进行了综合评价。

Methods The total cantharidin obtained with acidolysis method and the free cantharidin obtained with direct extraction method were determined in eight species of Meloidae and the control species Huechys sanguinea (Homoptera: Cicadidae) by gas chromatography, and the content of the bound cantharidin in each species was calculated with the content difference between the total cantharidin and the free cantharidin. The relationship between the contents of the bound cantharidin and the contents of Ca and Mg elements in Meloidae were assessed.

利用气相色谱法测定了8种芫菁和作为对照的黑翅红蝉体内总斑蝥素和游离斑蝥素的含量，总斑蝥素含量是通过酸水解法测得的，游离斑蝥素含量是通过直接浸提法测得的，以总斑蝥素与游离斑蝥素含量之差作为结合斑蝥素含量；并比较了结合斑蝥素与钙、镁含量之间的相关性。

By the principle of penalt function, the irrotational fluid field is constrained, and author has proposed the Difference Method for distinguishing fluid vortex modes among the natural modes of coupled systems. Author has calculated the real frequencies with the extra deductive method, and discussed the influence of the numerical solution due to the irrotational constraint.

对于流体有限扰动时的非线性耦合系统的有限元分析作了一些探讨，给出了非线性系统的基本方程、变分原理及有限元方程，并具体地导出了三维几何非线性流体单元的切线刚度公式，采用增量形式的Newmark预报——校正逐步积分法计算系统的动力响应，由Newton-Raphson迭代法及其修正方法求解系统的非线性方程组，还列出了不平衡力余量检查和位移迭代增量检查等迭代收敛判断准则。

The current research points out that for the CFCHS joints the linear extrapolation method can be used for chords,whereas the quadratic extrapolation method must be used for braces.The hot spot stress distributions on the CFCHS joints tend to be more uniform and their SCFs become smaller significantly,compared with the CHS joints.Axial tension on the brace puts the CFCHS joints at a disadvantage,which produces higher SCFs than axial compression.The effects of nondimensional geometric parameters β,τ and γ on SCFs of the chords of the CFCHS joints are basically the same as those of the CHS joints,but for the braces,there is a bit difference in the effects of parameters β,τ and γ between the two kinds of joints.Concrete has the function of improving the CFCHS joint rigidity and then decreasing SCFs which is expected to increase fatigue strength,but concrete strength grade does not exert significant influence on SCFs.

研究表明：CFCHS节点的热点应力，对主管可采用线性外推方法，对支管需采用二次外推方法；相比CHS节点，CFCHS节点的热点应力分布趋于均匀，SCF显著减小；CFCHS节点支管轴向受拉比受压不利，SCF增大；CFCHS节点几何参数β，τ，γ对主管SCF的影响效应与CHS节点基本一致，但是对支管SCF的影响效应与CHS节点有些差异；混凝土的作用主要是改善CFCHS节点刚度，从而降低SCF，并预期可提高疲劳强度，但混凝土自身强度等级的高低没有显著影响节点的SCF。

In the nucleotide of intron there is 0%-1.22% difference among these muntjac deers, and the divergene reached about 1.83% between E. cephalophus and the three species of Muntiacus. Using the software of MEGA to analyse molecular phylogeny, Phylogenetic trees were constructed with neighbor-joining method and maximum parsimony method.

由NJ法和最大简约法构建的进化树表明黑麂与赤麂亲缘关系较近，小麂与他们同为一属但关系较远，而毛冠鹿与它们之间的分化程度已达到属间水平。

When the peak-to-peak drive voltage of the transducer is 120 V,average of the results obtained using the proposed method and the radiation force method are 5.09 W and 6.06 W,respectively,with a difference of 16%.

测量结果表明，在换能器两端电压峰峰值为120V时，用本方法重复10次测得声功率的平均值为5.09W，相应的用辐射力法测得声功率的平均值为6.06W，两者相差16%。

Objective: To compare the difference of the results of urinary total protein with different proportion of albumin using Pyrogallol Red-molybdate method and benzethonium chloride method.

目的：比较尿白蛋白百分含量不同时用邻苯三酚红钼法和苄乙氯铵法测定尿总蛋白结果的差异。

The results of the 2. 5-D finite difference method for the cases of 0°and 360°are compared and consistent with that of the well known real axis integration method.

论文显示了单极子声源在带各种角度窜槽的套管井中激发的声场展开图和不同源距的接收波列。

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&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。