查询词典 density of magnetic flux

Experiment results indicate that the magnetic fluid flux has a direct relation with the magnetic field under the effect of traveling wave magnetic field. The bigger the magnetic field is, the more the flux is, when the structure of the magnetic fluid travellig pump and the saturation magnetization of magnetic fluid are constant. The volumes of the magnetic fluid from the travelling wave pump increase from 1.9 ml to 3.1 ml, when the magnetic field intensity increases from 25 900 A/m to 40 000 A/m. In addition, the change rate of the magnetic fluid decreases with the increase of the magnetic field due to the effect of magnetic field on magnetic fluid viscosity. The bigger the saturation magnetization of the magnetic fluid is, the more the flux is.

结果表明，行波磁场作用下的磁性流体流量与磁场的强度有直接关系：在磁性流体行波泵结构和磁性流体饱和磁化强度相同的条件下，磁场强度越强，其流量越大；当磁场强度从25900A/m增加到40000A/m时，单位时间内从行波泵内流出的磁性流体的体积由1.9 ml增加到3.1 ml；随着磁场强度的不断增加，磁性流体流量的变化率由于磁场对其粘度的影响而减小；而磁性流体的饱和磁化强度越大，其流量也越大。

The main magnetic bookmark, magnetic WordPad, magnetic darts, magnetic bottle opener, magnetic phone book, magnetic clasp, magnetic toys, magnetic refrigerator, the compass, magnetic stationery, magnetic jewelry, magnetic key chain, magnetic linkage, magnetic buttons and various magnetic gift.

其主要有磁性书签、磁性写字板、磁性飞镖、磁性开瓶器、磁性电话本、磁力扣、磁性玩具、磁性冰箱贴、指南针、磁性文具、磁性首饰、磁性钥匙扣、磁性挂钩、磁性钮扣及各种磁性礼品。

Ordinary solder materials, lead-free solder, the lead-free solder wire, solder paste, solder, the solder wire , high temperature tin, the low-temperature tin-line, lead-free tin-silver, the lead-free tin-silver line, low-temperature lead-free tin line, welding aluminum tin, the tin-aluminum welding wire, welding wire stainless steel tin, aluminum welding flux not stainless steel flux, environmental flux, welding of stainless steel, nickel, special aluminum solder, aluminum flux, aluminum brazing soft agent, paint remover, paint stripping powder (high-temperature paint stripping enameled wire a few seconds), copper aluminum welding, aluminum and aluminum welding, wire flux of new environmental protection (smoke-free and tasteless, non-volatile non-flammable) peaks of water-soluble flux, no-clean rosin flux, no-clean flux, thinners, cleaning agents, plate washer water , clean water machine, special purposes, such as water-soluble flux.

普通焊锡材料，无铅焊锡条、无铅焊锡线、焊锡膏，焊锡条、焊锡线、高温锡条、低温锡线、无铅含银锡条、无铅含银锡线、无铅低温锡线、焊铝锡条，焊铝锡线、焊不绣钢锡线、焊铝助焊剂、不绣钢助焊剂、环保助焊剂、焊不锈钢、镍、铝特种焊料、铝助焊剂、铝的软钎剂、脱漆剂、脱漆粉、铝铜焊接、铝与铝焊接、环保新型线材助焊剂(无烟无味、不挥发不易燃)水溶性波峰助焊剂、免清洗松香助焊剂、免清洗助焊剂、稀释剂、清洗剂、洗板水、抹机水、特殊用途水溶性助焊剂等。

Firstly, the relationship between the magnetic pole state of active magnetic pole and the running state of passive magnetic pole was analyzed. The electromagnet's four magnetic pole state and switch sequence, which can drive permanent magnet rotate, were ascertained. Secondly, taking one of magnetic pole state NS (N denotes electromagnet's left magnetic pole and S right magnetic pole) as an example, the distribution of space magnetic field was studied. In addition, the mathematical model of space magnetic field was set up based on the magnetic circuit fundamental and using the method of magnetic analysis and modeling. Lastly, the four states' mathematical model of space magnetic field was solved by using the MATLAB.

首先，分析系统主动磁极磁极状态和从动磁极转动状态之间的关系，确定驱动永磁体转动的电磁体4个磁极状态及切换顺序；其次，基于磁路基本原理，通过磁场分析和建模，以电磁体4个磁极状态之一的NS（N表示其左极、S为右极）为例，对电磁体的空间磁场分布进行研究并建立空间磁场数学模型；最后，以MATLAB为平台对4个磁极状态的空间磁场数学模型进行求解，将求解结果与实验数据进行对比。

The fiber length has only little influence on the basic density within the growth rings, and significant correlation at 0.01 levels was found between the basic density and the fiber length among the different rings. Only slight negative correlation was found between the basic density and the fiber width within the growth rings, but significant positive correlation at 0.01 levels was indicated between the basic density and the fiber width among the growth rings, contrary to that of fiber length. It was demonstrated that significant positive correlations at 0.01 levels between the basic density and fiber double wall thickness, fiber length to width ratio and double wall thickness to diameter ratio, significant negative correlations at 0.01 levels between the basic density and fiber diameter and diameter to width ratio, only slight negative correlation between the basic density and fiber width both in the same growth rings and among the different growth rings. No significant correlation was found between the basic density and the vessel morphological features, nor was the tissue proportion in the same growth rings. But among the different rings, it was found there was significant positive correlation at 0.01 levels between the basic density and the fiber proportion among the different rings, and significant negative correlation at 0.01 levels between the basic density and vessel-elements proportion and ray proportion, only slight negative correlation between the basic density and the parenchym proportion. Significant or no significant negative correlation was found between the basic density and the microfibril angle in the same growth rings, but significant negative correlation was found between the basic density and the microfibril angle among the different growth rings.

生长轮内纤维长度对基本密度的影响不大，而在不同生长轮间纤维长度与基本密度达极显著正相关，纤维宽度与此相反，同一生长轮内纤维宽度与基本密度极显著负相关，不同生长轮间只有微弱负相关；基本密度与纤维双壁厚、长宽比、壁腔比在生长轮内和生长轮间均呈极显著正相关，而与胞腔直径、腔径比均呈极显著负相关，仅与纤维宽度呈微弱的负相关；导管形态对基本密度的影响不显著；同一生长轮内组织比量对基本密度的影响也不显著，但不同生长轮间基本密度与纤维比量呈极显著正相关，与导管比量和木射线比量呈极显著负相关，与轴向薄壁细胞比量仅呈不显著负相关；生长轮内基本密度与微纤丝角呈显著或不显著负相关，但在生长轮间这种负相关达到极显著水平。

Shadow effect can not be neglected for thermal analysis of spacecraft,Accroding to the angle between solar light and antenna orbit plane and its orbit location,analytical geometry method was used for accurately calculating solar radiation heat flux distribution of reflector surfaces.To analyze the temperature field under heat flux,the formulations of net radiation flux density between two gray elements and the net flux density of gray surface under external thermal flux were deduced.Based on the characteristic of space environment,the nonlinear temperature distribution in transverse direction of reflector shell self radiation were considered,the finite element formulations were given for orthogonal material layered shell by Galerkin method.A layered element including a inner heat source layer was proposed,and the finite element formulation expressed by DOF of the inner heat source layer were put forward with temperature and heat flux boundarys between adjacent layer.

单馈反射面赋形天线是未来星载天线发展的一个重要形式，分析了基于物理光学、几何光学和几何绕射理论的理想反射面辐射场；介绍了基于几何光学的反射面天线赋形方法；针对赋形过程中辐射场的快速分析要求，比较分析了基于物理光学的Fourier-Bessel和Jacobi-Bessel级数展开方法以及GB展开分析方法；利用GB展开快速分析方法在20GHz频率下对0.6m口径的天线进行赋形分析，实现中国大陆的30dB增益覆盖，通过数值计算研究了固定增益期望下的口径尺寸随频率的变化，以及频率为20GHz的不同尺寸天线赋形后的覆盖目标区域最大增益的变化情况。

The magnetic intensity of the applied magnetic force on a ferromagnetic material denoted by the term H measured in oersteds; b. The magnetic inducition or flux density as the flux per unit area normal to the direction of the flux ,denoted by B and measured in gauss; c. The magnetic permeability establishes the relation between magnetic induction and magnetizing force expressed as B/H =u; d.Residual magnetism or remanent magnetism which remains in the casting after the magnetizing force has been removed .

磁场强度的应用磁力就一铁磁材料标注由任期h来衡量， oersteds ；乙磁inducition或磁通密度为通量每单位面积正常的方向通量，标注由B和衡量在高斯；长该磁导建立的关系磁感应强度和磁化力表示的B /为H = u ； d.residual磁性或剩余磁性，这仍然是在铸造后，磁化部队已被删除。

Optical density d of the material or the density of photographic film itself d field part of density d the density of the deep and change some of the most high density (h-red, green, or blue channels in maximum density) L intermediate density density (red, green, or blue channels in minimum density) M minimum density (red, green, or blue channels in the middle of the density) T transmission 4.2Murray-Davies formula in the measurement of surface films, film dot business card printing and membership card making dot area usually is the most important parameters.

光学密度 D 材料或片基本身的密度 D 实地部分的密度 D 深浅变化部分的密度 H 最高密度（红，绿或蓝通道的最大密度） L 中间密度密度（红，绿或蓝通道的最小密度） M 最低密度（红，绿或蓝通道的中间密度） T 透射率 4.2Murray-Davies公式在测量胶片的表面网点面积时，胶片制卡和会员卡制作网点面积通常是最重要的参数。

In this system,the VVVF(variable voltage variable frequency) control method based on magnetic flux trajectory is applied.In the system,it is the target for the magnetic flux linkage polygon to be greatly approximate to the ideal magnetic flux circle.Considering such limitations as the low speed torque ripple,high speed real time and the working frequency of switching element,through the subsection synchronization control method by applying different numbers of magnetic flux linkage polygon for different frequency range,the perfect precision specifications for speed can be obtained.

系统采用基于磁通轨迹法的他控式变频调速方案，以磁链多边形尽量逼近理想磁通圆为目标，并考虑低速转矩脉动、高速实时性和开关元件的工作频率限制等约束条件，通过采用分段同步控制方式，在不同的频段采用不同的磁链多边形边数，使系统获得了优异的转速精度指标。

Using the formula about the magnetic flux density induced by coil which deduced by Biot-Savart law,this paper deduces the formula about random point's magnetic flux density of hollow column solenoid and deduces the formulas about axial specific magnetic force and radial specific magnetic force by using the field gradient expression of binary function and the expression of specific magnetic force .

利用二元函数的梯度公式及比磁力公式可以得到磁性颗粒在厚壁圆环线圈所产生的磁场任意点的比磁力的轴向分量和径向分量。

In contrast to the ubiquitous rising-sun-with-rays military flag of the Japanese, Chinese banners and ensigns feature a range of designs.

与遍地都是的太阳军旗不同，中国人的旗帜和徽章设计得各式各样。

From their small corner of Feng's Guangzhou headquarters -- a jumble of pink leashes, squeezable rubber steaks, and plastic doggy Santas for Fido's stocking -- Soleil's designers come up with at least five new products a month.

从Feng 设在广州总部的产品展示柜台上可以看到，Soleil的设计师每月至少设计出5件新产品。