矩

Based on this model,the performance of a 22 kW PM motor,such as currents,losses and torque in open-phase condition,was analyzed under 30% and 50% rated load condition.

以一台22 kW永磁电机为例，分析了其在30%和50%额定负载下断相前后的定子电流、转矩波动及损耗情况。

The first order moment algorithm of nodal load for real-time power service restoration of distribution network is proposed.

摘 要：提出了适用于实时控制的配电网供电恢复计算方法——节点一阶负荷矩法。

The structure of the control system was simplified and the cost was reduced.

该方法简化了控制结构，降低了控制成本，实现了无刷直流电机的直接转矩控制运行。

The reentry performance of moving-mass actuated kinetic warheads is discussed in this paper.

对基于质量矩技术的机动弹头再入性能进行了探讨。

In discussing the properties of reflection and refraction of fiber grating, the coupled-mode equation, envelope function, transform matrix formalism, multilayer and optical path approximation are used for describing the linear and nonlinear characteristic of optical fiber grating.

在分析光栅的反射和透射规律时，采用了耦合模式法，包络函数法，转换矩阵法，多层介质薄膜法以及光程法，这些方法虽然具有不同的数学和物理模型，但在分析光纤光栅这一特殊的波导结构时，可充分展现它的线性和非线性特性。

In chapter 4, the in situ measurement system composed of the six-port reflectometer and the coaxial probe is introduced and some guidelines for in situ measurement is highlighted.

第二章建模和计算先对建模方法和反演方法进行了概述，然后建立了同轴探头的谱域全波模型，着重讨论了伽辽金矩量法求解积分方程有关的积分计算问题，分析了同轴探头高次模式的影响，最后给出了波导探头的谱域模型。

In this paper, we discuss the estimate of regression function in nonparametric regression model based on exponential in tegral mart in gale difference.

摘要本文研究了误差项是鞅差序列，且满足某种指数矩条件的非参数回归函数的估计。

Introduced a different strategy for estimating the working correlation so that the estimator always existed, and, even if the correlation was misspecified, the regression estimator remained optimal within the assumed family.

这一思想的好处是不用直接估计工作相关阵中的多余参数，而是利用广义矩估计的思想建立估计方程。

In the fourth part the algorithm of SVPWM that is adopted by the system implements the motor speed regulation.

第四部分系统采用SVPWM算法减少了逆变器输出电流的谐波，降低了脉动转矩，提高了电压的利用率。

This paper studies the concrete implementation flow of contour-based retrieval based on wavelet transform modulus maxima , multi-scale morphology and invariant relative moments. Also, experimental results are given to validate the feasibility of our strategy and the corresponding retrieval performance is analyzed.

从理论和技术的角度研究了在基于目标形状的遥感影像检索中，应用基于小波变换模极大值和多尺度形态学的边缘检测方法以及基于不变相对矩的轮廓特征描述方法的具体实现技术流程，通过实验充分验证了本文方法的可行性，并分析了检索性能。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。