同步装置

The study and application of wide-area measurement system which base on synchronized phasor measurement unit is a foreland subject in power system, it is very important to improve the level of power system stability and security .

基于同步相量测量装置的广域测量系统的研究及应用是当前电力系统自动化领域的前沿课题，它对于提高电力系统的安全稳定运行水平具有重要意义。

The sample of synchronized phasor measurement unit is completed and is tested in laboratory. It gives encouraging results.

本文研制的相量同步测量装置也可用于电力系统在线安全分析、运行和控制以及继电保护等领域。

The feasibility of setting up polarizer with multilayers is discussed in this paper.

根据测量结果，分析了在同步辐射装置作为偏振元件的可行性。

And because high temperature high-pressure water is flowing and can be real-time renewed, experiment condition can be ensured to be stable and synchronized with unit's practical operating condition.

测试装置内的高温高压水是流动的，实时更新，可保证试验条件的基本稳定和与机组实际运行工况的同步，用于金属在该体系下的腐蚀研究。

Motion synchronization between tool in X direction and principal axis rotation was controlled by electronic gearbox in cam turning. And profiling mechanism could be superseded by servo tool-holder. Linear motor direct drive servo tool-holder was designed, and host-slave control system with PC and DSP was developed for the require of high-speed and realtime servo. The technical process was analyzed in cam turning. Servo tool holder with tool swinging and principal axis variable rotate speed were presented to keep constant cutting angle and speed.

将电子齿轮箱用于凸轮车削加工系统的传动，以伺服刀架取代了传统加工的靠模装置，实现了刀具X方向直线运动与机床主轴转动的同步控制；设计了直线电机直接驱动的伺服刀架及基于PC与DSP构成的上—下位机控制结构，采用DSP进行实时控制以满足高速伺服需要；对凸轮加工过程的工艺特点与恒角度、恒速度车削进行研究，提出了具有刀具摆动功能的伺服刀架与机床主轴变转速运动方案。

Taking use of the reflectometer which is installed on the 3B1 line in BSRF, two kinds of measurements of reflectivity versus wavelength and reflectivity versus incident angle are carried out.

利用安装在北京同步辐射装置3B1束线上的一台小型反射率计，对磁控溅射方法制备的软X多层膜进行了R～θ、R～λ两种反射率测量，得到实测反射率高达32％的满意结果，同时给出了理论计算对实验的拟合，二者符合的很好。

By simultaneous measurement at two points of the sample surface the relative motion between these two points can be determined.

通过同步测量试样表面两个点，两个点的相对运动可以确定，从而允许激光引伸计的测量装置的使用。

The results from simulation and experiments show that by means of UPFC the power flow distribution among transmission lines can be rapidly and reposefully changed.

在暂态实验中分析了UPFC能改善系统同步稳定性的原因，并通过仿真证实了UPFC装置对功角和潮流的振荡具有抑制作用。

In high-voltage var compensation field, when switching the capacitor banks by mechanical switch, it is easy to bound when it closes and to restrike when it opens, and the mechanical switch can not be switched frequently. When switching the capacitor banks by electronic switch in series, it needs dynamic and static voltage sharing circuit and synchronous triggering circuit. It leads to complex structure and high cost.

为解决当前高压无功补偿领域采用常规机械开关投切电容器组开关合闸时触点弹跳产生过电压，分闸时易重燃及不可频繁操作，而采用串联固态电子开关需要相应的动、静态均压及同步触发电路导致系统结构复杂且成本较高的问题，提出一种基于新型高压投切开关的高压动态无功补偿装置。

GPS ; synchronized sampling ; unit ; application

全球定位系统；同步采样；装置；应用

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。