同步的

At the same time, those design indexes is realized well by means of selecting superior performance electronic apparatus abortively. Because of a great deal of digital EEG data and the demands on real-time display and synchronous data acquisition, a kind of multi-channel synchronous data acquisition system is

由于数字化的脑电信号数据量大，为满足实时显示以及同步采集脑电信号的要求，设计出了基于双端口和USB通讯接口的多通道同步数据采集系统，使脑电图仪与微机之间进行高速、可靠的数据传输成为可能。

According to the fundamental of vector control,a digital closed-loop control system of permanent magnet synchronous motor based on dsPIC30F6010 was designed and a model of permanent magnet synchronous motor in the estimation two phase rotating reference frame was introduced and an extended back electromotive force equation was deduced.

根据永磁同步电动机矢量控制的基本原理，设计了一种基于 dsPIC30F6010的无位置传感器永磁同步电动机控制系统，并介绍了在估算两相旋转坐标系下的PMSM模型，推导出了反电势方程的扩展形式。

The characteristic of the method is that driving condition and clock pulse for flip-flops are obtained at first hand by means of the state transitio n drawingand that designing asynchronous sequential cir-cuits and synchr onous sequential circuits can be unified.

时序逻辑电路可分为同步和异步，然而采用传统的时序电路的设计方法时，即使是同步时序电路的设计也需要7步[3]，要进行复杂的计算来求状态方程、驱动方程，既繁琐又容易出错；对异步设计就更为复杂了。

Simulation results show that the proposed method has minimal time deviation and can realize synchronization rapidly. The method can feasibly be applied to Ad Hoc network based on TDMA.

仿真结果表明，该方案具有比较小的时间同步偏差，能够快速的实现整个网络的时隙同步，可应用于基于TDMA的Ad Hoc网络。

The theoretic analysis and the practical application prove that using full-wave Fourier transform algorithm in line difference protec

通过理论和实际两方面的对比总结出，对使用矢量同步方法的线路差动保护采用全波差分傅氏算法后可以大大减小谐波带来的同步误差，提高保护装置的可靠性。

Based on matrix analysis of motor and general theory of alternating current machines,3-phases induction synchronous motor is substituted for symmetrical 2-phases motor with even gas,then the equation for instantaneous torque of induction synchronous motor step motion is obtained.

文中采用了电机的矩阵分析方法，根据交流电机统一理论，将三相感应式同步电机用等效的具有均匀气隙的两相电机来代替，得出了感应式同步电机步进运动的瞬时转矩表达式。

To promote the research and application of permanent magnet synchronous motor traction system of China's urbar rail rolling stock,the application and design characteristics of PMSM,the control techniques and efficiency optimization ways of system are overviewed by discussing the current research all over the world.

为促进我国城轨车辆用永磁同步电机牵引系统的理论研究与应用，结合国内、外研究现状，对城轨车辆用永磁同步电机的应用和设计特点，以及系统的控制技术和效率优化方法等进行了综述。

A new type high efficiency synchronous step-up DC/DC converter for hand-held device is designed in this thesis. It works in the PFM mode, and its switching frequency can up to 500 KHz. It offers a built-in synchronous rectifier that reduces size and cost by eliminating the need for an external Schottky diode and improves overall efficiency by minimizing losses.

本文设计了一种用于移动电子设备的高效同步整流的DC/DC升压芯片，该芯片采用PFM调制方式，工作频率最高可达500 KHz，内部集成功率管作为同步整流管，代替传统的肖特基二极管，导通电阻仅有0.4？

A password-protected database can′t be made replicable, nor can a password be assigned to a replicated database.

设有密码保护的数据库是无法成为可同步复制的，而且也无法对同步复制的数据库指定密码。

Making the simultaneous observations required careful planning between teams at the two locations, and is the first time that astronomers have caught a flare by synchronising their observations in this way.

进行这种同步观测需要异地的两个小组之间的详细规划。这也是天文学家们首次通过这样的手段同步观测到闪耀。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。