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- Thus the allowable error of area measurement was setted. 确定出该仪器量测图形面积时的容许误差;
- PMU is a key unit for Real-time Dynamic Monitoring System and Wide Area Measurement Systems (WAMS). PMU是电力系统实时动态监测系统及广域测量系统的核心单元。
- Objective: To study method of area measurement for the irregular region in the digital image. 目的研究一种数字图像中不规则轮廓区域面积的测量方法。
- Objective To design Wound Area Measurement System based on the digital image processing. 目的:设计一种基于图像处理技术的伤口面积测量系统。
- It is a premise to acquire real time power angle for wide area measurement system (WAMS). 摘要获取系统的实时功角值是大电网动态稳定控制的基本前提。
- Effect on area measurement due to dimensional and color (or gray) discreteness of CCD(charge couple device) is analyzed. 分析了电荷耦合器件(CCD)在空间和彩色(或灰度)的离散特性对面积测量的影响。
- The controller based on global signals of wide area measurement system (WAMS) is applied to the center of inertial for keeping synchronization. 该控制器采用广域测量系统中的全局信号,旨在对各区域的惯量中心进行控制并保持同步运行。
- WAMS (Wide Area Measurement System) is a new technology and domain developing in recent years.It"s the inevitable trend of power system modernization. WAMS是近几年发展起来的新兴技术和领域,是电力系统现代化的必然趋势。
- A wide area measurement system(WAMS) based control strategy to prevent cascading trips caused by flow transferring is presented. 潮流转移引起的连锁跳闸是导致世界各国大停电事件发生的重要因素,严重地威胁着电力系统的安全运行。
- Three enemy divisions drove in and seized an area measuring 20 by 100 li. 敌人的三个师打进来,占领了宽100里,长20里的地方。
- Because the data are marked on time label, it gives a great of convenience on data analysis and aftertreatment, and it gives ensuring for wide area measurement in power system. 由于数据被打上了时间标签,为数据的再处理、分析等提供了便利条件,为电力系统的广域测量提供了保障。
- Characterization of Ni/SiO_2 catalysts prepared with the method of chemical mixing procedure was carried out by means of BET surface area measurement, XRD and TG_DTA etc. 利用BET比表面积测定、XRD、TG DTA等对化学混合法制备的Ni/SiO2单元催化剂进行了表征.
- The spinel ferrite ultrafine particle catalysts were prepared by sol-gel method and characterized by DTA-TG, IR, XRD and BET surface area measurement methods. 采用溶胶 -凝胶法制备了含Zn、Ni、Co的铁酸盐纳米微粒催化剂 ;运用DTA -TG、IR、XRD以及BET比表面测试等手段对所制备的样品进行了表征 .
- Physical and chemical properties of the catalysts were studied using activity measurement, BET surface area measurement, XRD, TG DTA and IR spectra etc. 用原子吸收、碘价分析、活性和 BET比表面积测定及 XRD、 TG- DTA、 IR等手段 ;对催化剂和产物进行了物理和化学表征 .
- The transmission time delay cannot be neglected while wide area measurement system (WAMS) based on synchronous phasor measurement unit (PMU) is applied to wide area control. 应用基于同步相量测量单元的广域测量系统进行广域控制时,反馈信号的传输时延是不能忽略的。
- Main contents of this paper include: Dynamic Security Assessment(DSA),Wide Area Measurement System(WAMS) and Wide Area Control System(WACS),System restoration after a blackout. 评述广域测量系统及广域控制保护系统的构成、关键技术及应用领域,提出广域测量预警控制系统的概念。
- He steered into the parking area. 他把车开进了停车区。
- Sea area measurement usually uses GPS timely processing the position data for the boundary of sea area, and then calculating the area of anomalistic area. 摘要海域面积测算通常使用GPS定时测定待测海域边界位置点的地理坐标,再求取其围成的不规则区域的面积。
- With the development of the Wide Area Measurement System(WAMS) which bases on Phasor Measurement Unit(PMU), the real time signal transfer has been highly improved. 随着基于同步相量测量单元(PMU)的广域测量系统(WAMS)的发展,信号传输的实时性得到很大提高。
- The palladium catalysts supported by honeycomb porcelain and its deactivation state have been studied by means of XRD, SEM and BET surface area measurement. 应用XRD、SEM与BET测比表面等手段对蜂窝形多孔陶瓷钯催化剂及其失活状态进行了测试。