查询词典 synchronous

Comparing the synchronous rectifier to normal circuit by calculating the efficiency indicates that forestay is much better on efficiency and thermal performance. A simple circuit with good consistency, high efficiency, high reliability and low cost is presented in this paper. The feasibility is proved by emulating with computer.

通过分析已有的集中解决隔离型变换器输出带预偏置电压启动的解决方案，提出了一种全新的一致性好、成本低、效率高、简单和可靠性高的解决隔离变换器输出有预偏置电压的启动问题的电路，通过仿真验证了其可行性。

Objective:To investigate the effects of mechanical ventilation with synchronous and asynchronous extrasternum heart compression on cardiopulmonary resuscitation.

目的：探讨与胸外心脏按压同时和非同时机械通气在心肺复苏中应用的效果。

Custom communications system, through an agreement with the carrier detect achieve the two-way synchronous communication.

系统通过自定义通信协议，实现带有载波侦测的双向同步通信。

A synchronous fluorescence method for simultaneous determination of catechol and hydroquinone has been established.

建立固定波长同步荧光法同时测定邻苯二酚和对苯二酚的分析方法。

The concentrations of catechol and hydroquinone are linear with the intensity of synchronous fluorescence in the concentration range of 1.0×10^(-6)-9.0×10^(-5) mol/L and 1.0×10^(-6)-1.0×10^(-4) mol/L, with correlation coefficients of 0.998 6 and 0.999 1 and detection limits of 8.2×10^(-7) mol/L and 5.4×10^(-7) mol/L.

邻苯二酚和对苯二酚在1.0×10^(-6)~9.0×10^(-5)mol/L和1.0×10^(-6)~1.0×10^(-4)mol/L浓度范围内与同步荧光强度呈线性关系，相关系数分别为0.9986和0.9991，检出限分别为8.2×10^(-7)mol/L和5.4×10^(-7)mol/L。

S98ZKA0336 VCD UP-GRADING CIRCUIT BOARD FOR A CD PLAYER OR CD-ROM 获证 US 发明 08/815309 5926606 2017/3/9 540,000 Nuvoton 让与 A VCD up-grading circuit board for a CD player or CD-ROM includes an MPEGdecoder, a microprocessor, a DRAM, an audio digital/analog converter, a TV encoder and a synchronous clock generator. The VCD up-grading circuit board for a CD player or CD-ROM is attached to the CD player or CD-ROM to allow the CD player or CD-ROM to play a VCD without additional connection between the VCD up-grading circuit board and the CD player.

S98ZKA0335 自动产生及校正系统同步时钟之影音光碟机升级板获证 TW 发明 86101019 90406 2017/1/29 460，000 Nuvoton 让与本发明系关於一种自动产生及校正系统同步时钟之影音光碟机升级板，尤指一种可附加於CD播放机内而升级为影音光碟播放机之升级用的电路板，此升级电路板为可解决传统升级电路与CD播放机之间同步讯号连接之不便性、易产生干扰与更改CD播放机原有线路所衍生之各项缺陷下，而为一种无需於其间额外连接同步时钟讯号，而在升级板上内建一同步时钟产生器，以随时监视CD播放机与MPEG解码器之左右声道取样时钟讯号之相位差而立即补正，即可达到令两者完全同步者。

Variable speed system of cycloconverter-fed multiphase synchronous motor is a major area in the development of high-power AC drive system because of its small dimension, large capacity, high torque, high-rate power, wide-range variable speed, low harmonic pollution, and reliable safety. In the low-speed and large-capacity industrial drives, such as rolling mills, winding motors, marine propeller, cement mixer, etc. it will find a wide application in the future.

采用多相同步电动机的交交变频调速系统，具有体积小、容量大、高转矩、高功率比、宽平滑调速区、谐波污染小、安全可靠的特点，是大功率交流调速领域的主要发展方向之一，在轧机，矿山卷扬，船舶推进，水泥球磨机等低速大容量的场合有着广泛的应用前景。

Firstly, oscilloscope control system based on GPIB technique is presented with friendly operation environment to the HIFU system, and it uses multithreading technique in programming to realize real-time recording and display of the signal; Secondly, temperature collection and data recording system is designed, which also could get real-time recording and display of the 16 channel temperature signal, and it's believed to be of great use for further experiments of the HIFU system; Thirdly, multiple ultrasonic phased array's phase shifter is designed,which could provide 8-bit phase control in a range of frequency where the centrical frequency is 1MHZ. Fourthly, the module of serial communication is realized to insure the communication between devices and computer, including both synchronous and asynchronous communication, which enables the system to transfer data reliably and stably; Finally, the module of digital quantity control is accomplished, which provide for upper application the consistent solution to the control of exterior devices via digital interface. It can get or set the devices state using interrupt mode to receive input signal or send output signal.

主要有以下几个方面：设计了基于GPIB的示波器控制系统，给课题的研究工作提供了一个良好的环境，它采用了多线程编程的方法，能够较好的实时显示当前波形并记录数据；设计了温度采集和数据记录系统，能够对16路温度信号进行并行同步的实时采集，用于HIFU剂量学研究中温度场检测和医疗评价；设计了相控阵相位延时电路并且通过调试，满足了课题的相位控制的要求，在中心频率为1MHZ左右的频率范围内都能够达到8-bit相位控制；实现了串口通讯模块，为各项设备与计算机之间的通讯提供保证，它提供同步和异步的通讯能力，使系统能够可靠稳定的传输数据；建立了数字量控制模块，为上层应用程序提供一致的方法使用数字接口控制外部仪器，它使用中断的方式来接收输入或输出设定的开关量信号，从而得到或设定各种仪器的状态。

Couplings include: diaphragm coupling, tire coupling Roller Chain Couplings Diaphragm Couplings drum gear coupling plum-shaped flexible coupling flexible set of dowel pin coupling star flexible coupling elastic dowel pin dowel pin coupling flexible coupling teeth Rigid Couplings Safety Couplings slider coupling universal coupling, etc.; synchronous round types, including circular gear (3m, 5m, 8m) and trapezoidal tooth series, the company can also custom-made by a variety of clients sprocket , gear.

联轴器包括：膜片联轴器，轮胎式联轴器滚子链联轴器膜片联轴器鼓型齿式联轴器梅花形弹性联轴器弹性套柱销联轴器星形弹性联轴器弹性柱销联轴器弹性柱销齿式联轴器刚性联轴器滑块联轴器安全联轴器万向联轴器等；同步轮种类包括圆弧齿（3m、5m、8m）和梯形齿系列，公司还可按客户定做各种链轮、齿轮。

This paper introduced the single channel synchronous MAC protocol for multi-hop wireless networks.

提出了一种单信道无线多跳网络同步媒体接入控制协议—M-TDMA。

A historical region of southwest France between the Pyrenees and the Garonne River. The duchy of Aquitaine was joined with France after the marriage of Eleanor of Aquitaine to King Louis VII in1137, but its possession was disputed after her subsequent marriage to Henry II of England.

阿基坦法国西南部一个历史地区，位于比利牛斯山和加隆河之间，在1137年阿基坦的埃莉诺与国王路易斯七世结婚之后阿基坦公国加入法国，但当她再嫁英国亨利二世后，其归属权便受到争议

There are moments when I look at the smiling , happy faces of my expectant staff and wonder how they will cope when confronted by an outraged housemaster along with an unrepentant and recalcitrant bleached blond teenager in 18 years ' time .

有时候，我看着那些满怀期待的员工微笑，幸福的脸，想着当他们遇到一位愤怒的宿舍管理员和一位不知悔改，叛逆，而且将头发染成白色的18岁少年时，他们会如何处理。