矩

This paper realizes the automatic control to speed and torque of the dynamometer by the industrial computer.

实现上位工控机对测功机转速和转矩的自动控制。

The distribution function of the system response and state function is approximately determined by the standard normal distribution functions using Edgeworth series, and its reliability is obtained.

在结构系统响应和状态函数的前四阶矩的一般数学表达式的基础上，使用 Edgeworth级数把未知响应和状态函数的概率分布展开成标准的正态分布表达式，并放松了对随机参数的分布概型和激励类型的限制，从而确定了系统的可靠度

Because of the complexity of the terms in the expansions, many turned to the research of the second-order (also called one-term) Edgeworth expansions, and the rate of convergence of the distributions of the standard...

最近，在更弱的矩的条件下，关于单样本学生化U统计量的Edgeworth展开的收敛速度问题有了更进一步的结果。

Random parameters ; multi degree of freedom nonlinear vibration systems ; reliability ; statistical fourth moment method ; Edgeworth series

随机参数；多自由度非线性振动系统；可靠度；四阶矩技术； Edgeworth级数

The simulation results of some examples illustrate the application and the effectivity of this method.

自由空间的线天线的矩量法公式描述如式（1）所

We propose a theoretical framework to predict the impact of inward FDI on the host country's incumbent firms' price-cost margins, according to the mode of entry of FDI We then investigate empirically the competitive discipline effect exerted by both imports and FDI on manufacturing plant-level price-cost margins in the UK, for the period 1991-2001. We estimate different specifications of the price-cost margin equation with both fixed-effects instrumental panel estimator and efficient generalized method of moments estimator with clustering correction.

通过构建理论模型预测FDI的不同进入模式对东道国企业价格－成本盈余(Price-Cost Mar-gin， PCM)的影响，以及采用固定效应工具面板和经过聚类修正的有效广义矩等不同估计模型，对1991-2001年间的进口和FDI对英国制造业企业PCM竞争规制效应进行的实证研究表明：绿地FDI对利润有负向影响，而并购FDI对利润的影响为正，即绿地FDI对PCM有规制效应，并购FDI会增加PCM。

For the damping of speed oscillation of hybrid electrical vehicle engine, this paper founded a PID controller according to the relationship between electrical throttle control positions, engine speed and engine torque.

根据发动机电控节气门开度-转速-转矩关系，建立了混合动力汽车用发动机转速比例-积分-微分控制模型，并根据发动机转速响应特性，对模型参数进行了整定。

Simulation results showed that the electromagnet torque and the radial levitation force were decoupled, and the validity of this method was confirmed.

仿真结果表明：实现了电磁转矩与径向悬浮力之间的解耦，验证了此方法的有效性。

In this paper, a novel Crowbar control strategy is proposed to limit the over current in the rotor and the over voltage of the DC bus as well as the transient oscillation of the electromagnetic torque. Moreover, a capacitive current is injected into the grid to assist the recovery of the grid voltage.

文章提出了一种Crowbar控制策略，能有效抑制转子过电流、直流母线过电压以及电磁转矩的振荡，并可向电网注入无功电流以帮助电网电压的恢复。

In this paper,the method of moment is employed for analyzing the electromagnetic character of wire structure conductor.

0引言矩量法在求解电磁场边界问题的数值计算中已获得了广泛的应用[1-3]。

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。