查询词典 zero set

The result shows before the dryness fraction drops to zero landing small changes, when dryness fraction becomes zero, the temperature falls quickly.

以杜84-馆平59水平注汽井测试数据为基础，建立了水平井井筒及油藏动态变化的解释模型。

The results show that Prandtl mixing length theory predicts airflows better than zero-equation model provided by Chen,and that Prandtl mixing length theory is more reasonable than zero-equation model provided by Chen but Chen's model seems easier to converge from the analyses of their construction.

由于该模型应用起来非常方便，并且计算量比标准K-ε模型小很多，它逐步受到工程研究人员重视。2001年，该模型被Fluent公司采用，并在其商用CFD软件Airpak修回日期：2006 07 11中采纳，对其在国际暖通空调领域内的广泛使用起了推动作用。

When the two convertors run concurrently, circulatory zero-sequence current of the shunt circuit between the convertors is restricted to be zero; circuit loss is accordingly reduced, and circuit components are protected.

当两个变流器同时运行时，抑制两个变流器间的并联回路环流零序电流为零，从而减小电路损耗，保护电路元件。

The default value of ZERO means that by default, ZERO cursors will be cached for your session.

默认值为0表示，在默认情况下，Oracle不会给你的session缓存游标。

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。

In Guizhou, a call of nature in the villages Dongs, to create the founding of two of the world's admiration and History: First, the natural population growth rate has always been close to zero and the other is zero incidence of criminal cases.

在贵州，一个叫占里的侗族自然村落，创造了建国来两项令世人惊叹的零记录：一是人口自然增长率始终几近为零；二是刑事案件发生率为零。

The influence of zero wave for spring curve of plate mill on rolling force adaptation was analyzed and it was proved that if the influence of wave of entry gauge on plate stress could be ignored, the influence of zero wave for spring curve of plate mill on rolling force adaptation also could be ignored.

分析了中厚板轧制过程中弹跳曲线零点漂移对轧制力自适应的影响，认为在忽略入口厚度波动对轧件塑性影响的前提下，轧制力模型的自适应不受弹跳曲线零点漂移的影响。

To reduce and compensate the influence of temperature on ring laser gyro bias error and attain the precision of inertial level gyro, the mechanism of RLG zero-bias error due to temperature is analyzed. Based on a great number of environmental temperature experiments of RLG, a general temperature compensating model and a new kind of BP neural network model are established. A method for identifying the model parameter is proposed. Simulation results show that the simplified compensating model can reduce the zero-bias by more than a magnitude and achieve real-time compensating feature.

零偏是衡量激光陀螺性能的一个重要指标，但其受温度影响很大，为了降低和补偿温度对激光陀螺零偏的影响，使其达到惯性级陀螺仪的精度要求，分析了温度对激光陀螺零偏误差的产生机理，在大量高低温环境试验的基础上，建立了一种通用的零偏温度补偿模型和一种BP神经网络模型，并给出了模型参数的辨识方法，仿真结果表明，对该模型作适当的简化，可以将零偏减小一个数量级以上，而且具有实时补偿性能。

Datacolor company's main production for electricity, chemicals, petroleum, metallurgy, shipbuilding, railways, nuclear power, military and other basic industrial sector control system used special cables, including fire-resistant fire-retardant series, cross-linked column, high temperature series resistance, low temperature series, radiation-resistant series, waterproof series, Low Smoke low halogen series, low smoke zero halogen series more than a dozen major categories, such as nuclear power stations with cables, military cables, towing cables, specifically to replace imported cables, waterproof underwater cables, electronic computer shielded cable, control cables, low smoke zero halogen cable category, compensation wire, cable, high-temperature fire cable, high-frequency heating and hot with cable, RF cable, high flexible cables, the security cable, instrument signal cables, marine cables, Oilfield cables, signal cables, communication cables, sensor cables, control cables, power cables, thermocouple, thermal resistance and so on.

德塔公司主营生产用于电力、化工、石油、冶金、船舶、铁路、核电、军工等基础工业部门控制系统中所采用的特种电缆，包括耐火阻燃系列、交联系列、耐高温系列、耐低温系列、耐辐射系列、防水系列、低烟低卤系列、低烟无卤系列等十几个大类的核电站用电缆、军工电缆、拖曳电缆、专门替代进口电缆、水下防水电缆、电子计算机屏蔽电缆、控制电缆、低烟无卤类电缆、补偿导线、电缆、高温防火电缆、高频加热和伴热电缆、射频电缆、高柔性电缆、本安电缆、仪表信号电缆、船用电缆、油田电缆、信号电缆、通讯电缆、传感器电缆、程控电缆、电力电缆、热电偶、热电阻等。

The first direct measurement with micrometer piston skirt and the outside diameter Do micrometer stop screw to the locking plate position, and then dial indicator card installed and well well inserted under the initial installation of the amount of cards, directly into the cylinder corresponding cylinder kit, adjust the volume of the cylinder rod out in table inserted length, so that small hands dial indicator cell has about 1 volume of pre-press and lock locking rod inserted mother, at the same time, large dial indicator dial to adjust zero, the last cylinder to adjust the volume of good form under test card inserted rods and do at Anvil micrometer and measured the rod between the big hands dial indicator at this time than the "zero" high value is the piston and cylinder liner with the space.

3先直接用千分尺测量活塞裙部的外径并将干分尺止动螺钉扳转到锁紧位置，再将卡装好百分表和初步安装好插杆的量缸表直接卡入对应气缸套内，调整量缸表插杆的伸出长度，使百分表的小表针有1格左右的预压量并锁紧插杆锁母，同时将百分表的大表盘调整到零，最后将调整好的量缸表的测杆和插杆卡在干分尺的砧座和测杆之间，此时百分表大表针比&零&高的数值即为活塞和气缸套的配合间隙。

These are hard to decipher, unlike the clear influence of Alberto Giacometti.

然而，不像阿贝特·杰克梅第③的影响那么明显，人们较难看出其中的深层含义。

Trend envelope forecasting method is a forecasting method which was produced by many subject intersecting synthetically.This method was oriented the concept of infimum and supermun in mathematica analysis.This model which was decided dependedon program problem,and whose means have the aim of the method of statics analysis.

趋势包络预测方法是一种由多学科综合交叉而产生的预测方法，它的思想源于数学分析中确界的概念，它模型的确定依赖于规划问题，它预测的手段借助于统计分析的方法。