1) flow velocity inductive potential
流速感应电势
2) induced voltage
感应电势
1.
By means of this new method, the nonorthogonally induced voltage risen in the ground resistance measurement can be overcomed practically and the problem of using one circuit overhead line for the ground resistance measurement of large grounding grid is solved.
克服了接地电阻测量中的非正交感应电势的影响,方便、有效地解决了仅用一回架空线路测量大型地网接地电阻的问题。
3) induced electromotive force
感应电势
1.
Taking parameter variation into account, a new model of the induced electromotive force relation of a permanent magnet synchronous motor (PMSM) was presented.
提出了永磁同步电动机考虑参数变化时精确的感应电势关系式新模型,建立了微分型和非微分型两种高精度感应电势观测器,证明了感应电势观测器的稳定性和收敛性,分析了参数变动对位置估计的影响。
2.
The induced electromotive force at the secondary coil can be got by changing the flux of the primary coil.
采用变磁阻法改变初级线圈的磁通 ,在次级绕组上得到相应的感应电势。
4) induced potential
感应电势
1.
With the specular-reflection model, the induced potential for a swift diatomic molecular ion moving near a metal surface is investigated.
本文采用“镜反射”模型研究了快速运动的双原子分子离子在金属表面层飞行时产生的感应电势,并借助于一种局域介电函数,分别推导出当离子平行于表面飞行及垂直于表面飞行时感应势的解析形式。
5) induced electromotive force
感应电动势
1.
Measuring AC magnetic permeability by induced electromotive force;
利用感应电动势测量交流磁导率
2.
This article discusses the transformatoin of induced electromotive force under the condition of relativistic transformatoin, the motion-produced electromotive force do not transfer into induction-produced eletromotive force according to difference of choices of reference system.
讨论感应电动势在相对论变换下,随着参照系选择的不同,动生电动势并不变换为等值的感生电动势,仅当参照系间的相对速度比光速小得多时才例外。
6) induction electromotive force
感应电动势
1.
Using the slider to drive a metal bar to cut perpendicularly the uniform magnetic field in the center of a Helmholtz coil,induction electromotive force could be produced.
利用滑块带动金属杆切割亥姆霍兹线圈中心区域匀强磁场的磁感应线,可以产生感应电动势。
2.
The first discussion is that induced electromotive force plus moving induced electromotive force equaling induction electromotive force in experimental result ; The second discussion is that moving induced electromotive force is divided into three types, according to the generating cause of moving induced electromotive force.
围绕电磁感应定律讨论两个问题,第一论证了感应电动势等于感生电动势与动生电动 势之和是实验结论;第二阐述了依据动生电动势产生的原因,将动生电动势分为三种类型;并且通 过实例进行了相关的讨论。
补充资料:地下水流速
地下水流速
velocity of groundwater flow
d ixioshui!iUsu地下水流速(veloeity of groundwater flow) 地下水在含水层中的运动速度。地下水运动具有方向性,在平面图上,它垂直于地下水等水位线或等水压线。地下水流速有渗透流速和实际流速两种。 渗透流速一种假想的渗透水流速度。渗透流速表达式为: Q V~止冬 A式中V为渗透流速(又称达西渗透流速),m/d;Q为通过断面的地下水流量,m3/d;A为垂直于水流的过水断面积,m“。 实际流速地下水在含水层空隙中的实际流动速度。面积孔隙度和总的水流路径的概念如图所示。由于含水层空隙的大小和形状的不同,水流所受阻力也有差别,所以水流在含水层中不同位置的实际流速是不等的。实际流速可用于分析地下水在含水层中运动的性质,而不能用于定量计算。在供水水文地质勘寨中,多用平均实际流速作为判别水流运动状态和定量的指标。地下水平均实际流速是通过含水层过水断面的流量除以过水断面上孔隙的面积,即 Q u~蔽式中二为平均实际流速,m/d;n为孔隙度,%。地下水平均实际流速与渗透流速的关系为:,一孔隙空间中的 尹产~~~一-一-甲,州擞、‘己介注断义买际水流路径卜衬><尹飞刁l孔隙面积.曰生乙占.占幽‘拓佑益~~人了、代产气卜妇卜~一~门产们A.夕气味和翻丫从了州\l、傲\平也登的 脚,丫~b 面积孔隙度和总的水流路径约概念 a一面积孔隙度;b一总的水流路径 V U二二— n 平均实际流速又有称做平均孔隙流速的。有时即使是在均质流体中,孔隙中的一部分流体仍是不动的,如细颗粒介质中被吸附或部分盲端孔隙中被阻滞水流,因此对渗透水流来说,公式中需用有效孔隙度来表征,即 Q “一石厕式中从f为有效孔隙度(
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条