查询词典 speed

The permanent magnet synchronous motor is decoupled into second-order linear speed subsystem and first-order linear flux subsystem. The aim space voltage vector is ascertained by combining sector judgment of stator flux with the practical system inputs after linearization and decoupling. The system is decoupled into two linear subsystems, flux and rotor speed, which realizes the completely dynamic decoupling for permanent magnet synchronous motor speed control system.

将永磁同步电机动态解耦成二阶线性转速子系统和一阶线性磁链子系统，结合磁链扇区判断方法和线性化解耦后的实际系统输入来确定目标空间电压矢量，实现了永磁同步电机调速系统的转速和磁链动态解耦控制。

So impressive was this invention, so difficult was it to exceed this speed limit, that nearly 3,500 years later, when the first mail coach began operating in England in 1784, it averaged a mere ten mph. The first steam locomotive, introduced in 1825, could have a top speed of only thirteen mph and the great sailing ships of the time labored along at less tan half that speed.

这一发明给人的印象如此之深，要超过它的最高速度又如此之难，以致于过了将近三千五百年，到了公元1784年第一辆邮车在英国运行时，它的时速平均只有十英里。1825年问世的第一辆蒸汽机车，最高时速仅为十三英里，而当时的大帆船仅以不到火车一半的速度在海上慢慢颠簸。

In order to speed up the convergence speed, the each one step of the Landwber iteration is discomposed into the matrix computation and solution and a quick iteration scheme is given for the matrix computation. The relevant accelerated algorithm is given too. Numerical example proves that the accelerated algorithm can quicken convergence speed, reduce the calculation burden, and overcome the obstacle of application of Landweber method of iterated regularization.

为了加快Landweber迭代收敛速度，将每一步Landweber迭代分解为矩阵计算和求解，对矩阵计算部分设计了一种快速迭代格式，并给出了相应的加速算法，通过数值实验验证了这种算法能够大大加快收敛速度，有效的减少计算量，解决了Landweber迭代正则化方法在实际应用中的障碍。

For example: If a person running toward you at moderate speed can be stopped at 1/125 sec, you'll need a shutter speed of 1/500 sec to stop the subject moving across the frame, and a shutter speed of 1/250 sec to stop him if moving obliquely with respect to the camera.

举例来说：如果一个人跑，对你的温和速度可以停在1 / 125秒，你将需要一个快门速度为1 / 500秒，以阻止受移动全国帧，快门速度为1 / 250秒，以阻止他，如果动斜交方面的照相机。

Adjust the operating speed by the remote: the user can use the remote to adjust the speed when the neon lamp is in using, which can make the shining speed more reasonable and smooth.

遥控调节运行速度：可在霓虹灯运行时边看边用遥控调节速度，使霓虹灯的变化速度更合理，更流畅。

In order to find out the biomechanics feature of three joints muscles o f lower limbs by using new skates in push-off phase of speed skating, this article combines the kinetic data obtained by Cybex-Norm and kinematic data obtained by tridimensional analytics by employing the Newton interpolation polynomial f or the first time, draws the curve of muscles moment of two elite female speed- skaters in push-off phase of speed skating, and analyzes the change feature of muscle strength, so as to find out the reasons of less power output and provide reference for training and the improvement of sports results.

摘 要：为了找出使用新冰刀后蹬冰时下肢三关节肌群的生物力学特性，首次利用数值计算中的牛顿插值法，将等动测试获得的动力学数据和三维立体解析获得的运动学数据结合，绘出两名优秀女子速滑运动员实际蹬冰时肌群力矩的变化曲线，并分析肌力变化特点，找出两人做功明显不足的原因，为指导训练和提高运动成绩提供定量依据。

Along with the development projects of high speed train from Shanghai to Beijing and the one from Shanghai to Hangzhou, the cities with stations along the railway lines can feel the influence of high speed train transportation. But there lacks of research on how much and what the influence of high speed train station will have on city.

目前随着京沪和沪杭高速铁路的逐步启动，沿线设站城市都意识到高铁对城市的巨大影响，但究竟高铁车站对城市的影响有多大，会带来哪些产业的增长，国内理论研究还比较空白。

Describes the Dodge very abundant dynamic performance with an adjective summary, that is smooth this phrase without a doubt, although lets the person startled colorful lively performance in the slow-speed of revolution territory development, but after on expressway, 2.0 make it the motive to add on Dodge the very abundant component heavy 1,455 kg vehicle to be heavy, still had created certain burden to the vehicles, along with vehicle speed climbing, the acceleration strength which very abundant unfolds becomes slower gradually, but uses frequently in the people 80 to 100 km/h sectors, the acceleration time still held certain level, what but was a pity, when after the engine speed arrives at 4,000 rpm,, the noise which transmits by the engine compartment tends to be obvious, caused the trifle regarding comfortableness to decrease.

用一个形容词概括描述道奇酷博的动力特性，那毫无疑问就是平顺这个字眼虽然在中低转速域展现让人惊艳的轻快表现，但上了快速道路之后，2.0升发动机加上道奇酷博份量不轻的1，455 kg车重，仍然对车辆造成了一定的负担，随着车速的攀升，酷博所展现出的加速力道逐渐趋缓，不过在国人使用较频繁的80至100 km/h区间，加速性仍保有一定水平，但较为可惜的是，当发动机转速来到4，000 rpm后，由发动机室所传来的噪音渐趋明显，对于舒适性造成了些许减损。

Because of the slip speed will change when the voltage of VVVF is changed, so we can control the slip speed by controlling the outport voltage of VVVF, A saving energy method of main driven motor of CNC machine tool which running in the defferent state of load is introduced in the paper .This method is realized by optimizing the slip speed in the defferent load state based on the adaptive neural network.

根据电机的转差率的变化，通过调节变频器装置的输出电压来控制电机运行转差率，并基于神经网络模型参考自适应的控制算法实现了交流异步电动机在不同负荷下最优转差率的控制，从而达到电机在不同负载下的节能运行。

The effects of raw material collocation, spinning speed, draw ratio, speed ratio, false-twist angle, first and second heater temperature, second and third overfeed, zero roller speed, network density on the production were discussed.

主要讨论了原料的搭配、丝速、拉伸比、速比、假捻角、第一热箱温度和第二热箱温度、第二超喂和第三超喂、零罗拉速度、网络度等工艺参数的影响。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。