动势

The main contents of this subject is the basic theory of the windings, including the calculation of the electric potential and magnetomotive force and polarity of the winding\current and voltage.

本课题内容有绕组的基本理论，概述了交流绕组的电动势、磁动势等的计算以及绕组线圈、电流、电压的极性，这些为讲述绕组分析方法时提供了基础。

The paper carried on the theoretical analysis, the computation of the air gap magnetomotive force, the electromagnetism torque and MMF decoupling parameter k.

对六相电机气隙磁动势、电磁转矩和磁势解耦参数k进行了理论分析和计算，并通过实验进行验证。

A set of equivalent three-phase windings was established based on the same magnetomotive force and power. A dual three-phase PMSM was substituted equivalently by a three-phase PMSM after a winding transformation.

基于产生相同磁动势和功率不变的原则，构建了一个等效的三相绕组，绕组变换后，原双三相永磁同步电动机等效为普通的三相永磁同步电动机。

Located in the prospecting lines Nos.47 and 37-33 on the middle 270m section, the mineral typomorphic characteristics are as follows: pyrite possesses the combination of octahedron with pyritohedron, pyritohedron with octahedron, etc It appearsas hole-centre and mix center conduction, if being electron-centre conduction, the absolute magnitudes of thermoelectromotive force and thermoelectromotive coefficient of pyrite are bigger relatively; pyrite contains Cu; the relative absorbency in quartz D(subscript H2O0.9403, D(subscript CO2)0.1961, D(subscript CO2)/D(subscript H2O)0.2591 in prospecting lines 37-33 is smaller than average D(subscript H2O1.3267, D(subscript CO2)0.3090, D(subscript CO2)/D(subscript H2O)0.338 2 in the deposit.

江西茅排金矿区270m中段47勘探线及37~33勘探线的矿物标型特征为：黄铁矿形态见有八面体和五角十二面体，五角十二面体和八面体等聚形；出现空穴心型导电和混合型导电黄铁矿，若为电子心型导电黄铁矿，其热电动势和热电系数的绝对值相对较大；黄铁矿成分中检测出Cu；石英相对吸光度（37~33勘探线）D(下标 H2O)0.9403，D(下标 CO2)0.1961，D(下标 CO2)/D(下标 H2O)0.2591，略低于矿区研究样品的平均值D(下标 H2O1.3267，D(下标 CO2)0.3090，D(下标 CO2)/D(下标 H2O)0.3382。

The speed-sensorless vector control and the identification of motor parameters in this paper are the two novel research of vector control.Using asynchronous machine's mathematic model in three-phase static reference frame, this paper has derived it's mathematic model in two-phase static reference frameand in two-phase rotating reference frame, and got the coordinate transformance formulus based on the constant magnetic force and power force, by compared different field orientation methods, we can find that field orientation at rotor field can realize the decoupling of the stator current flux component

无速度传感器矢量控制和电机参数辨识是矢量控制的两个新的研究方向，本文利用异步电机在三相静止坐标系下的数学模型推导出两相静止坐标系、两相同步旋转坐标系下的数学模型，根据磁动势守恒和功率守恒的原则，得出各坐标变换公式；通过不同磁场定向方式的比较发现，异步电机按转子磁场定向时定子电流励磁分量和转矩分量可以比较方便地实现解耦。

Connections from the Model 7168 card to the sample must be made with untinned copper wire to minimize thermoelectric EMFs.

从7168卡到样品的连接必须使用不镀锡的铜线以便将热电动势降到最低。

The brown on the top of the painting is not a static patch of solid brown paint, but a dancing brown pool oozing with gleans of earthy yellow, and pale streaks of white, as if it were a piece of velvet fluttering in sunlight, teasing up and down in a play of light and shade infused with the energy and motion of a three-dimensional space.

在画面上方的棕色，不是死实一片的棕色，而是可以隐约看到土黄、淡白色彩隐约其中，好像一块亮丽的丝绒在阳光下抖动，於是起伏错落，或明或暗，好像有立体的空间感，或是有一种气韵、动势在流动。

But the point can't be show just by the complexion so he douses on their face with the sadness, broken to embody the advantage and reveal the complex psychology (such as perplexed, anxiety, hesitate, secretive, alert, toughness, bloat, stubborn, distressed, decadent).

而且，他在用油画绘制这些图像时，在构图、色调、笔触方面都渗透了强烈的自我痕迹，在神情、动势方面，则根据自己的判断加以微妙的加工，使他们的心理态势得到显征和还原。

This paper presents MMF of a five-phase induction motor with concentrated and full-pitch windings by means of fourier analysis and winding function , which indicates theoretically that the five-phase induction motor with concentrated and full-pitch windings can provide more electromagnetic torque and higher torque density than others.

本文运用傅里叶分析和绕组函数的方法，推导了集中整距绕组五相感应电动机的磁动势，得出集中整距绕组五相感应电机能更好地增加电机的电磁转矩、提高转矩密度。

When the work end and the reference temperature at the end there will have thermoelectric flow in the circuit, connected to display instrument, Thermocouple indications of the meter will be produced by the thermal emf corresponding temperature.

当工作端和参比端存在温差时，就会在回路中产生热电流，接上显示仪表，仪表上就会指示出热电偶所产生的热电动势的对应温度值。

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％。