大大
- 与 大大 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Knife-type valve: Features 1, ultra-structure length, saving materials, piping systems can greatly reduce the overall weight of 2, the effective space occupied by small, can effectively support the strength of pipelines can reduce the possibility of pipeline vibration 3, flashboard selected austenitic stainless steel, Corrosion performance greatly improved, which can effectively prevent the corrosion caused by gate leakage sealing diarrhea 4, on the use of flexible packing seal PTFE, sealing reliable, flexible and lightweight 5, the gate with Knife function, can effectively break the gates of all types of media objects
刀型闸阀:产品特点 1、超短结构长度,节省材料,可使管路系统整体重量大大减轻 2、占用有效空间小,能有效支持管道的强度,可减少管道振动的可能性 3、闸板选用奥氏体不锈钢,耐腐性能大大提高,可有效的防止由于闸板腐蚀引起的密封泻漏 4、上密封填料采用柔性 PTFE ,密封可靠、操作轻便灵活 5、闸板具有闸刀的功能,能有效的闸断介质中各类杂物
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In net of public security bureau alarm substation director Qiao Zhi expresses: Economic progress needs social stability, the ability of economic environment society that has had develops, electronic business affairs also is same, need has a favorable social order, the be in charge on next our can active exploration nets is led, go the cost of the spot greatly reduce come down, this kind of be in charge on the net is led, it is to pass IP to be grasper, drive the administrative pattern of minute of district, the netizen this locality netizen and other place is apart, greatly reduced each alarm the thing should go the cost that the other place investigates.
在大会上杭州市公安局网警分局局长乔智表示:经济发展需要社会稳定,有好的经济环境社会才能发展,电子商务也是一样,需要有一个良好的社会秩序,下一步我们会积极的探索网上的管事率,把去现场的成本大大的降低下来,网上的这种管事率,一是通过IP为抓手,推动分地域的管理模式,将本地网民与外地的网民分开,大大的降低了每一个警事都要去外地调查的成本。
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In order to overcome the technological difficulties encountered in the course of insulation fault diagnosis on the base of dissolved gases analysis, several kinds of mathematic models and actualized methods are brought forward to improve the reliability and veracity of fault diagnosis of transformers. The research works are shown mainly as followings:1 A modified fuzzy multi-criteria method is brought forward for insulation fault diagnosis of transformer. Furthermore, a new method for insulation fault diagnosis is proposed on the base of fuzzy multi-criteria together with rule reasoning. With fuzzy diagnosis in the method, fault reasons are filtrated and then the reasons in low probability are prohibited, Moreover, the left reasons are testified by using rule reasoning and then final concludes are drawn in much less misjudge probability and better results.2 On the base of geometry characteristics of C- partition to sample set of DGA data of transformer, a method is put forward to compute effective radius of neighbor field of a sample, number of clusters and values of initial centers. Moreover, the fuzzy C- means cluster model with adaptive weight is brought forward in the first time and then the fault classifier is designed for insulation fault diagnosis of transformer.3 According to the weakness of the degree of gray of gray incidence, a new formula to compute DGI is put forward and then incidence order criterion is ascertained. Moreover, a new DGI model for fault diagnosis is proposed according to the further analysis to relationship between fault reason and content of oil dissolved gases of transformer.
为解决在应用油中溶解气体分析方法(Dissolved Gases Analysis,简称DGA)诊断变压器内部绝缘故障时所遇到的主要技术难题,论文提出了用于提高变压器故障诊断准确性和可靠性的数学模型及实现方法,主要研究工作如下:1)提出了一种改进的变压器绝缘故障诊断模糊综合评判方法;进一步提出了将模糊综合诊断与规则推理相结合进行绝缘故障诊断的方法,该方法采用模糊推理对故障原因进行"过滤",滤掉可能性极小的原因,然后进一步利用规则推理验证剩下的可能原因,得出最终结论,大大减少了误判比率,获得了较好的效果。2)根据以变压器DGA数据为特征量的样本空间的c-划分几何特性出发,提出了一种求取样本有效邻域半径和聚类数及聚类中心初值的方法,在此基础上,首次提出了一种自适应加权的变压器绝缘故障诊断的模糊c-均值聚类模型,并设计出故障分类器。3)针对常用灰色关联度的不足,提出了一新的灰色关联度计算公式及确定关联序的准则;并在此基础上,通过深入分析变压器发生绝缘故障时的原因与油中溶解特征气体含量的关系,建立了一种新的故障诊断灰色关联模型;通过实例分析证明,该方法能有效地诊断出变压器绝缘故障及故障部位,大大提高了诊断的准确性。
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Presents the design of longitudinal control for ASTOVL lift-fan aircraft, a multi-variable, strong-coupling, complicated nonlinear system to make the system nonlinear offset and decouple, and the method used for linear system in designing the system to gain expectant flying qualities and the combination of aerodynamic control surfaces with thrust vectors to delay the control surfaces getting into saturation, and the minimum N-norm generalized inverse theorem of weighted generalized inverse adopted to apportion the moments commands, which make the control surfaces gain appropriate deflection and the simulation results to verify the dynamic inverse control laws designed really make the system nonlinear offset and decouple; when one command is given, only this output will response, and others do not response; when all commands are given together, the responses will be just the linear superpose of the response of each command, therefore the operation of the pilot will be simplified greatly.
摘 要: ASTOVL升力风扇飞机是多变量、强耦合、复杂的非线性系统,采用非线性动态逆理论设计控制律以实现系统的非线性对消及解耦,然后,采用线性系统的设计方法对系统进行设计,以使系统获得期望的飞行品质。同时,考虑到ASTOVL升力风扇飞机是由气动舵面和推力矢量融合作用的,为了延缓各舵面进入饱和的时间,采用加权广义逆中的极小N-范数广义逆定理分配力矩指令,从而使各舵面达到适当的偏转角。并将所设计的控制律进行了仿真,结果验证了所设计的动态逆控制律使系统实现了非线性对消和解耦,单个指令作用时,只有该项响应,其余不受影响;所有指令作用时,其结果就等于单个指令作用时的线性叠加,这样使驾驶员的操纵大大简化而易于控制,从而大大降低了飞行事故率。
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Deformation greatly promoted carbonitride isothermal precipitation and made C-curve shift leftwards. The position and shape of C-curve depended on the content of Nb and N to a great extent, C-curve shifted leftwards a little when N content increased and its nose temperature was raised with Nb content increased. 3 when cooling rate increased, start temperature and finish temperature of continuous cooling precipitation decreased, full precipitation became difficult to take place, the volume fraction of carbonitride precipitation decreased, molar fraction of Nb and C dissolved in austenite increased, and the precipitation grain was further refined. Deformation shorten precipitation start time during continuous cooling, raised precipitation start temperature, accelerated precipitation kinetics of carbonitrides.
计算表明:1在Fe—Nb—C系统中,随着温度的降低,析出相的平衡体积分数增加,溶解在奥氏体中的Nb、C的摩尔分数降低,析出相中C和Nb的原子分数的比值v增加;2变形大大促进了碳氮化物的等温析出,使C曲线左移,Nb和N的含量与C曲线的位置和形状有一定的关系,N含量的增加,使C曲线略有左移,而Nb的含量的增加使得C曲线的鼻子区上移;3随着冷却速率的增大,连续冷却析出的开始温度和结束温度均有所降低,并且析出变得越来越不充分,析出相体积分数明显减小,溶解在奥氏体中Nb和C的摩尔分数增大,析出相粒子被明显细化,变形大大缩短了CCP过程碳氮化物析出的开始时间,提高了析出的开始温度,促进了析出动力学。
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We carried out some test and routine observations, and by the data analyses we conclude:1 This system can improve the contrast and spatial resolution of the filtergram and magnetogram obviously;2 The optimization of the algorithm largely improve the temporal resolution, and this makes the routine observation possible.
通过对试观测和常规观测数据的分析,我们发现:1该系统能够大大提高单色像、磁场数据的对比度和空间分辨率;2对相关跟踪算法的优化大大提高了系统的时间分辨率,系统可以投入常规观测使用。
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Using the system man-hour account will be decreased greatly;account speed and ve...
利用该系统大大减少了工时计算中的重复工作,计算速度和准确率大大提高,也使得工时定额工作规范化和标准化。
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In this study, symmetric successive overrelaxation preconditioned conjugate gradient algorithm is used to solve large linear system derived from 3-D finite-element resistivity forward modeling. Using row-indexed sparse storage mode to store coefficient matrix, the algorithm converges much quickly and requires much less storage of computer.
引入对称超松弛预条件共轭梯度迭代算法求解电阻率三维有限元计算形成的大型线性方程组,并有机结合系数矩阵的稀疏存储模式,使得三维有限元正演计算的速度大大提高而内存需求则大大减少。
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Sampling and preservation Stabile experiment show that it can be preserved for 3 days under room temperature and in 4℃refrigeratory.
此后,由于探头表面活化,探头的峰值会大大降低,初始化过程也会大大缩短,一般在120s至180s之间。
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To the problem that large-scale labeled samples isn't easy to acquire in the course of SVM training, the active learning strategy is used in the SVM training and an incremental training algorithm of active SVM based on the uncertainty based sampling of distance ratio is proposed in the paper. The experimental results show that the active SVM learning strategy can considerably reduce the labeled samples and costs compared to the passive learning method, and at the same time it can ensure the accurate classification performance is kept as the passive SVM and also expedite the SVM training.
针对 SVM训练学习过程中难以获得大量带有类标注样本的问题,本文将主动学习策略应用于SVM增量训练中,提出了一种基于距离比值不确定性抽样的主动SVM增量训练算法,实验结果表明在保证不影响分类精度的情况下,应用主动学习策略的SVM选择的标记样本数量大大低于随机选择的标记样本数量,大大降低了标记的工作量或代价,而且训练速度同样有所提高。
- 推荐网络例句
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For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether
年美国个人破产法的一个改动使得破产登记急速下降,而后引起了信用卡大规模的亏损。
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Eph. 4:23 And that you be renewed in the spirit of your mind
弗四23 而在你们心思的灵里得以更新
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Lao Qiu is the Chairman of China Qiuyang Translation Group and the head master of the Confucius School. He has committed himself to the research and promotion of the classics of China.
老秋先生为中国秋阳翻译集团的董事长和孔子商学院的院长,致力于国学的研究和推广。