查询词典 at a speed of

The key points of sensorless technology in PMBLDCM are to study a method which can detect rotor position accurately by simply method in whole speed range. After analyzing current sensorless methods of the PMBLDCM, it is found that those methods are successful at middle and high speed, but they often fail to detect rotor position at low speed when the back electromotive force is small or zero.

纵观目前的永磁无刷直流电机的无位置传感器控制方法，比较成熟而可行的方法多集中于电机在中高速区域运行时，能够较准确估计转子位置；电机处于低速、极低速、静止状态时电加热管，因为反电动势幅值较小或者为零，而无法正常工作。

Regarding the speed along with the displacement even change's uniform non-uniform linear motion, its acceleration should define like this: At the unit displacement the speed change (the physics significance is: The speed along with the displacement change "the speed"), like this has:, the acceleration unit should be , Expression speed change which causes in proportion to as a result ,of the speed action of force.if the final velocity is 0, acts according to , namely .

对于速度随位移均匀变化的匀变速直-运动，它的加速度应该这样定义：在-位位移上速度的变化（物理意义是：-速度随位移变化的"快慢"），这样-有：，加速度的单位应该是，表示由于正比于速度的力作用而引起-速度的变化，其中。如果末速度为0，则根据，即。

2Dispense an X of Diamondite Glasswork Restorer across the pad. If you are using a drill or rotary polisher, set the maximum speed at 1800 RPM. If using a dual action polisher, set the speed to 4. Apply the polish on about a quarter of the windshield at a time. Work in an overlapping motion until the polish starts to dry. There is no need to apply pressure to the machine.

在绵盘上使用Diamondite玻璃抛光剂划一个"X"，如果你使用电钻或Rotary则将最大转速调至1800RPM，如果你是使用DA则将转速设为4，每次只在挡风玻璃的1/4大小区域内进行抛光，使用互相重叠的移动方式抛光直到抛光剂开始变得乾燥，你不需要在机器上施加任何压力

The invention is capable of increasing the air pressure in the air inlet manifold and improving the aeration coefficient in the cylinder while in instantaneous acceleration, thereby changing the combustion conditions of the internal combustion engine at a medium and low speed, resolving the problem of the poor accelerating performance of the turbocharger at the medium and low speed, improving the output torque at the medium and low speed, optimizing the accelerating performance and greatly shortening the acceleration response time of the automobile; moreover, because the fuel is fully burned, the utilization factor of the fuel is also improved and the discharge capacity of the internal combustion engine is reduced.

本发明能够增加进气歧管内的空气压力，提高加速瞬时缸内的充气系数，从而改变内燃机中低速的燃烧状况，并改变涡轮增压机中低速加速性能差的问题，提高中低速的输出扭矩，优化加速性能，使车辆的加速响应时间大大减短；同时，由于燃料获得了充分燃烧，也提高了燃料的利用率，降低了内燃机的排放量。

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。

Should the vessel be discharge at a rate less than the average ,the buyer shall pay to the seller demurrage at the rate of u,s %15,000,00 per running day and a prorata shere for any portion of such running day should the vessel be pay to the buyer speed of dispatch at the rate of u,s \\$14,000,00 per running day.it is agree that demurrage and /or speed of dispatch be settles by the buyer and the seller withing five (5)banking days from recept of the vessel s master invoice .

万一，船在少于平均的比率是放电，买主将以 u 的比率对卖方超过停泊日期支付，s%15，000，00 每一给如此流动的日子的任何部分的流动日子和 prorata shere 应该以 u 的比率，船是对特派的买主航速的薪资，每一流动的日子 s$14，000，00。它是同意超过停泊日期及特派的航速是每天从船 s 主人的发票的 recept 由于五(5)银行业的买主和卖方的长椅。

Energy requirement for drying could be reduced by a dryer with a heat recovery device. In order to analyze the optimum operation conditions, the effect of fan speed on the temperature, airflow distribution and effectiveness of the heat recovery device was investigated in the drying system. The optimum fan speed would be at maximum speed during initial heating stage and at lower speed during steady stage in order to improve the performance.

具有热能回收装置的乾燥系统能降低乾燥所需的能量，为了分析此乾燥系统的最佳操作条件，测试其风扇转速对於乾燥室内温度、风速和热能回收装置效能的影响，归纳出风扇最佳运作应是在加热启动阶段应用最快转速，到达稳定阶段后，以较低转速可提升乾燥机的性能。

The complete wind turbine speed control firstly proposed here also improves the tracking effect of wind turbine rotating speed to variable wind speed. Wind turbine rotating speed synchronized power observer compensates the power ripple of wind turbine resulted in inverter dead time. A low pass filter used at the output of MPPT controller smoothes the speed reference, which makes the rotating speed of wind turbine more stable.

本文首次提出的变转速扰动的MPPT控制提高了风车最大功率点追踪的快速性和稳定性，风车完全转速控制提高了风车转速对变动风速的跟踪效果，转速同步风车功率观测法消除了逆变器死区所造成的风车功率波动的影响，带有低通滤波器的MPPT控制器使得风车的转速更加趋于平稳。

Because shockwaves might disturb regular airflow at fans with a high tip-speed (axial speed at the tip of a fan blade), fans are developed to keep to tip-speed as low as possible, not more than two or three times the local axial velocity.

因为冲击波可能会以高度的扇叶速扰乱来自风扇的常规气流，风扇被改进成保持扇叶速尽可能的低，至多2或3倍于开始的轴向速度。

To solve the aerodynamic problems resulted from high-speed trains when they pass through a tunnel, a model experiment system for high-speed trains was set up on the basis of analyzing the relative present experiment systems at home and abroad, and its similarity rules were derived. In this system, compressed air is used to impel a model train, and the speed of this train speed can reach 70 m/s.

为了解决高速列车进出隧道引起的空气动力学问题，基于对目前国内外高速列车模型试验研究现状的分析，建立了模型列车速度可达100 m/s的压缩空气式高速列车模型试验系统，并导出了模型试验的相似准则。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。