近点的
- 与 近点的 相关的网络例句 [注:此内容来源于网络,仅供参考]
-
Aimed at the problem of choosing the initial value when the Newton method is used to compute the controlling unstable equilibrium point, a practical and rigorous solving scheme was presented: by identifying the controlling load bus of the given fault, and using the Thevenin equivalent circuit to represent the rest of the system at the state of the post disturbance stable equilibrium point, using the steady equivalent circuit to represent the induction motor in composite load, and then using the torque characteristics of induction motor, a point near the CUEP is gained to be the initial value. The second order normal forms was used to approximate the stable manifold of CUEP, and the local approximating boundary of the region of attraction of the post disturbance stable equilibrium point was gained. Then just by simulating the state of the system at the fault clearing time, the transient voltage stability of the system could be determined.
针对采用牛顿法求取故障后系统主导不稳定平衡点(controlling unstable equilibrium point,CUEP)存在的初值选取难题,提出一种实用但不失严谨的解决方案:通过识别给定故障的主导负荷母线,对主导负荷母线以外系统由故障后稳定平衡点处的状态进行戴维南等值,对负荷中感应电动机部分采用其稳态等值电路,再由感应电动机的转矩特性求得CUEP附近的一个点作为近似的CUEP,以此为迭代初值可靠求得CUEP;采用二阶正规型来近似CUEP的稳定流形的方法求得近似的局部吸引域边界;由仿真得到故障清除时刻系统的状态并根据该状态是否位于吸引域内判断系统的暂态电压稳定性。
-
For the uniformly ergodic Markov processes, which is a classic framwork established by Deuschel-Stroock for studying the LDP for empirical measures, the LDP of f_n~* in the weak topology and the uniform weak*-LDP in the strong topology ||·||_1 for f_n~* are established. Furthermore, we prove that f_n~* is asymptotic optimal in the sense of Bahadur. These results are obtained for the first time in the dependent case. For this generalization from the i.i.d.
在此框架下,我们建立了f_n~*在弱拓扑下的大偏差原理以及在L~1-拓扑下对初始点一致的弱*大偏差原理,另外,我们还证明了f_n~*在Bahadur意义下是渐近最优的,这些结果在相依情形下是全新的,为了做这样本质性的推广,我们需要克服许(来源:ABC论文6d网www.abclunwen.com)多技术上的困难和应用不少特殊的工具,诸如Harnack型不等式,Cramèr型偏差不等式,一致可积算子,线性算子的扰动理论,Bishop-Phelps定理等等(它们都是首次用于处理这样的问题)。
-
It is the first time that these phenomena were observed: Two nuclei are surrounded by plasma and locate at the central of the female gametophyte and the others nuclei are positioned at the fringe of the female gametophyte; Before the pollen tube enters the female gametophyte. the nuclei in chalazal end begin splitting of plasma and form multinuclear cell.4. The pollens of Gnetumc are spherical or applanate with single aperture. The ornamentation of exine is spine. The basis part of spine is lenience and the top part of spine is tip or obtuse sphere.
首次在买麻藤属植物的雌配子体中观察到2个游离核位于配子体的中央位置,且被一团原生质所包围的,其余的游离核位于边缘的现象以及花粉管进入雌配子体前,合点端的核已经发生胞质分裂形成多核细胞的现象 4、买麻藤的花粉近球形或扁平型,有单萌发孔,外壁表面具小刺状纹饰,小刺基部宽大,末端尖或钝圆。
-
The sand dunes analyses data have shown they mainly consist of well sorted, symmetry skewness and find sands, and the kurtosis peak is narrow or very narrow. There are abundant impacts of mechanic process on the surface of quartz grains. The traces of eolian process often superpose on the traces stamped by river and beach processes. The dish--shaped concavities and mechanic pits are the most common surface textures, but the barchan concavities and curved grain edges are indicated the marks by eolian environment. The heavy minerals assemblages of coastal dunes are dominated by relatively high specific gravity which have stable chemical properity suggesting the mordern high dynamic environments of coast area. The depositional structures of coastal dunes are typified by corss--bed sets composed of steep foreset laminates and gentle windward dipping sets. It also contains some shell fragments and strong worn foraminiferal tests that are impossibly found in inland desert. On the other hand, the sandy deposits of the continental shelf of East China Sea are with wide range of grains, and the depositional pattens are quite complicated.
海岸沙丘是晚全新世以来相对稳定的海平面背景下的海岸带风成堆积,其沉积特征是以细沙为主,分选好,搬运方式以跃移占绝对优势,偏度上近对称,峰态窄到很窄;石英颗粒表面机械作用形态丰富,风成作用形态叠加于河流和海滩过程形态之上,碟形坑和撞击麻点是最为常见的表面形态,而新月形坑和曲脊是其指示性的特征标志;沙丘沙重矿物以化学性质稳定、比重较大的种类为主,反映了海岸带目前的高能动力环境;海岸沙丘沙的沉积构造以高角度前积层和低角度顶积层组成的交错层理为典型特征,同时还含有少量内陆沙漠所没有的少量贝壳碎屑和强烈磨损的有孔虫壳体。
-
It is proved that the method using the BEM to calculate the load distributions on the contact lines of involute gear pair, in which the applied load is taken in the form of a concentrated one at a single node, is not suitable. A method in which the tractions of the BEM are made to imitate the Hertzian pressure of the gear using 8 nodes isoparametric elements is introduced.
本文解决了边界元法在空间啮合副计算中存在的系数矩阵的存储,奇异单元积分的计算、表面不连续点处面力一点多值和求解未知量的线性方程组矩阵元素的计算等问题,编制了比不采用上述处理方法的一般边界单元法节省近一半内存和计算时间的适合空间啮合副的三维边界元法计算程序。
-
If "winner unique skill " being to know stock market be watched by person,that "the hero is invincible " is to let people how to deal with stock market; If operating method inside the "winner unique skill " is road no in complete set guerrilla detachment play, the regular army who is that the same stuff is entire then "the hero is invincible " handle system does battle general plan, the person looks at coke target-rization, step order-rization, method hipping, behavior normalizes , the effective safe mechanism manage, will bring deep one revolution to deep one revolution unable nothing chapter speculation way , the form deciding share price some classics of checking gimmick along power destiny unexpected turn of events composes in reply 1 agreeing with 3 buying point, Give investor the best having provided marketplace opportunity to grasp, but the high position faction that risk controls sends out one , two sells stopping that point and mark of archives interpose mean, general cover is difficult to be close to the body.
如果说《赢家绝技》是让人看懂股市,那《英雄无敌》就是叫人们怎样对付股市;如果说《赢家绝技》里的操作方法是不成套路的游击队打法,那么《英雄无敌》就是一套完整操作体系的正规军作战方略,其视焦目标化、步骤次序化、方法模式化、行为规范化,安全有效的机制manage,将给无章无法的炒作方式带来一场深刻的革命,决定股价走势命运的变盘手法之若干经典形态和契合3+1买点,给投资者提供了市场机遇的最佳把握,而风险控制的高位派发一、二卖点和分档设置的止损,又将套难于近身。
-
Selects in the material on inorder to for person by mystical graceful graceful feminine daydream,both must leave the dust refinedly, and does not lose the nationalclothing characteristic, therefore must select with it feeling closelining, the pure silk, the tissue, the flower bud silk unionutilization, suddenly reveals its mystically, is graceful; Is and theblack gray and so on other colors embellishes using the clothing wholepurple, achieved the harmonious feeling, echoes with the subject;Again take has the national style design, lace element and so onsplicing as the design spot, joins the modern clothing synthesis tocut out the idea, during attenion popular element, needs to derivethis nationality traditional culture and the national specialcharacteristic penetrates from the national clothing color and themodelling into during the fashion female attire design, manifestsAmerica of the fashion which the national culture and the modern tidalcurrent unifies.
在材料的选用上为了给人以神秘曼妙优雅的女性遐想,既要出尘脱俗,又不失民族服装特色,因此要选用与之感觉相接近的面料,真丝、薄纱、蕾丝的结合运用,来突显其神秘、优雅;运用服装整体的紫色系与黑色灰色等其他色点缀,来达到和谐的感觉,与主题相呼应;再以有民族风格的图案、花边的拼接等元素为设计点,加入现代服装合体的裁剪理念,在注重流行元素的同时,更需要汲取本民族传统文化和民族特质从民族服装色彩及造型深入到时尚女装的设计之中,体现民族文化与现代潮流相结合的时尚之美。
-
In this study, genetic analyses were conducted to determine the genetic basis in an elite resistant inbred line Siyi with complete resistance to maize dwarf mosaic. A new genetic model, two dominant complementary genes conditioning the resistance, were found by Mendelian genetic analysis based on parents, F1, F2 and backcrosses in three successive years' field trails. The two genes were further mapped near the centromere of chromosome 3 and 6, respectively by tightly linked microsatellite markers using 242 plants from F2 generation. The resistance gene on chromosome 3 is 1.0 cM apart from the flanking markers phi053 and umc1527, respectively. Whereas the linkage distance between two flanking markers bnlg1600 and phi075 and resistance gene on chromosome 6 was 1.0 and 4.0 cM, respectively. Genotypic analysis of the plants from testcross and F3 populations supported the new genetic manners.
课题组通过连续三年的抗病鉴定,在国内种质资源中筛选出一份综合农艺性状优良、配合力较高的自交系四一,三年的表型遗传研究和两年的分子标记工作,发现四一中的玉米矮花叶病抗性是由两对显性互补基因控制的,进而利用F2作图群体,把发现的两个基因定位在第三和第六染色体的着丝点附近,并获得了双侧紧密连锁的分子标记连锁图谱,其中第三染色体上的分子标记UMC1527和phi053从抗病基因双侧逼近1 cM,而第六染色体上的分子标记phi075、bnlg1600从抗病基因双侧分别逼近4 cM和1 cM;利用B2群体、F2:3家系、BC3F1群体和带有第三、第六染色体抗病基因以及两个抗病基因的近等基因系,进一步证实了四一中成株期抗性是由两个显性互补基因控制的。
-
Following, a experiment has been carried out, the incident waves with a frequency band of 200kHz-3 50kHz are used to the experiment, and a series of peak value-time curves are drawn each 10kHz, corresponding time are found through fitting peak value, thus the position of the defect is calculated accurately. The application of awl-shaped sensor head in the heat change water pipe experiment indicates that the ultrasonic guided waves may transmit nearly 50 meters in the pipe, which is not influenced by the elbows and makes it possible to test defects in long distance and large-scale. The water-load pipe experiment indicates that the displace and energy maybe leakage at the near-surface, which is significant for the further research.
而后,采用200kHz至350kHz频段的入射波进行了实验验证,并每隔10kHz绘出一条峰值一时间的曲线,通过拟合峰值点,找到对应的时间,从而准确的计算出了缺陷的所在;应用锥形探头的热交换水管的实验表明,超声导波可以在管道中传播了近50米的距离,且不受弯头的影响,从而使得长范围、大规模检测成为可能,水载管实验说明了离面位移和能量可能会发生泄漏的特性,为导波的深入研究和应用作了铺垫。
-
At this time if the Yao Ming is clear to get the ball because the rocket rearguard break in the process, all calfs withdraw after defend the member of team the meeting, resulting in oneself have already been placed in the Yao Ming clear surroundings of the inside track to defend thus he order would draw back and he of distance,, is very near apart from a basket under , the other party defends the pressure very small, easy to accomplish can get a goal.
因为火 箭后卫突破的过程中,所有的小牛的防守队员都会后撤,这样造成本身已经处在内线的姚明的周围防守他的点会拉开和他之间的距离,而这时如果姚明得到球,距离篮筐很近,对方的防守压力很小,轻而易举就可以得分。
- 推荐网络例句
-
Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).
呼气,收缩臀部肌肉;拱起身体,尽量抬起头来,右腿伸直朝向天花板(膝微屈,以避免肌肉紧张)。
-
The cost of moving grain food products was unchanged from May, but year over year are up 8%.
粮食产品的运输费用与5月份相比没有变化,但却比去年同期高8%。
-
However, to get a true quote, you will need to provide detailed personal and financial information.
然而,要让一个真正的引用,你需要提供详细的个人和财务信息。