光电

"DeviceNet is a low-cost communication link to connect industrial field devices (such as limit switches, photoelectric sensors, valve manifolds, motor starters, process sensors, bar code readers, variable frequency drives, panel displays and operator interfaces) to a network and eliminate expensive hardwiring."

DEVICENET对于连接工业现场设备(如：限位开关，光电传感器，控制阀，电机启动器，过程传感器，条形码解读器，变频驱动器，显示面板及操作界面)及实现网络化来说是一种低成本的通讯连接方式，它可免除昂贵的硬件费用。

"DeviceNet is a low-cost communication link to connect industrial field devices (such as limit switches, photoelectric sensors, valve manifolds, motor starter s, process sensors, bar code readers, variable frequency drives, panel displays and operator interfaces) to a network and eliminate expensive hardwiring."

DEVICENET对于连接工业现场设备(如：限位开关，光电传感器，控制阀，电机启动器，过程传感器，条形码解读器，变频驱动器，显示面板及操作界面)及实现网络化来说是一种低成本的通讯连接方式，它可免除昂贵的硬件费用。

"DeviceNet is a low-cost communication link to connect industrial field devices (such as limit switches, photoelectric sensors, valve manifold s, motor starters, process sensors, bar code readers, variable frequency drives, panel displays and operator interfaces) to a network and eliminate expensive hardwiring."

DEVICENET对于连接工业现场设备(如：限位开关，光电传感器，控制阀，电机启动器，过程传感器，条形码解读器，变频驱动器，显示面板及操作界面)及实现网络化来说是一种低成本的通讯连接方式，它可免除昂贵的硬件费用。

"DeviceNet is a low-cost communication link to connect industrial field devices (such as limit switches, photoelectric sensors, valve manifolds, motor starters, process sensors, bar code reader s, variable frequency drives, panel displays and operator interfaces) to a network and eliminate expensive hardwiring."

DEVICENET对于连接工业现场设备(如：限位开关，光电传感器，控制阀，电机启动器，过程传感器，条形码解读器，变频驱动器，显示面板及操作界面)及实现网络化来说是一种低成本的通讯连接方式，它可免除昂贵的硬件费用。

Traditional instrument in harmonic measurement is the transformer with circularity form core coil, but it is influenced by direct current and saturated, so it could not be used to measure direct harmonic current.

基于Rogowski 线圈的光电直流谐波电流测量系统解决了传统谐波电流测量受直流分量影响的难题，是集光纤技术、电子技术、激光技术于一体的新型谐波电流互感器。

Use the Rogowski coil as the sensor and transmit the signal and energy with the optic fibre, analyse the principle of the measurement of harmonic current in HVDC system and the factors of its measurement of influence by opticelectricity and computer technology. The Rogowski coil is used to measure the harmonic current in HVDC system. It doesnot affect by direct current and has good frequency characteristics.

本文在全面分析高压直流谐波电流测量方法的基础上，确定以空心线圈为传感器，以光纤传输信号和能量，结合光电技术、微计算机技术，系统地分析了谐波电流测量系统的工作原理及影响其测量的多种因素，提出了解决问题的具体方法和措施。

Using photoelectric timer to time a linear oscillator,the displacement-time curve is obtained,and the simple harmonic motion of the linear oscillator is demonstrated.

利用光电计时器记录弹簧振子经过已知点的运动时间，由实验数据画出振子的位移-时间图像，即得到简谐运动的图像，并应用该原理制作了演示简谐运动图像的装置。

The power variation of the targeted harmonic signal and harmonic suppression ratio were calculated and evaluated. The theoretical caculations and simulated results suggest that power variation can be maintained within 1 dB with dc bias drift less than 5% and the harmonic suppression ratio is stable in the SSB RoF link.

理论计算和仿真结果表明，偏置漂移会使目标信号的功率抖动增大，但当偏置漂移量小于5％时，功率抖动小于1 dB，而谐波抑制比保持稳定；分析了与非理想光电调制器啁啾相关的有限消光比和双臂驱动不平衡度对RoF链路性能的影响，有限消光比会增加目标信号的功率抖动并降低谐波抑制比，而通过优化调制器的双臂驱动不平衡度可以提高单边带调制RoF链路性能。

Finally, CCD, focused on measuring principle and Hartmann Hartmann photoelectric measurement system is applied to CCD optical system aberration measurement system.

最后结合CCD，重点介绍了哈特曼测量原理及哈特曼光电测量系统，是CCD应用于光学系统像差的测量系统。

Because of that I think there is more technological headroom in photovoltaics.

所以，我认为光电技术有更大的发展空间。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。