脉冲的

The article researched new type thyristor trigger that adapts the frequency of input power automatically, then analyzed the designing ways and process of frequency-tracked trigger in detail, yet validated capability of trigger through experiment and actual appliance in project, we also build up the fault-diagnosed and disposal cell of hypogyny machine with SIMATIC S7-200 PLC, besides, programmed and debugged to realize various monitor and diagnose; more, smart design make protection function more perfect and action more sensitive, so it can realize perfect swift and reliable protection under fault condition.

本文重点研究了以频压变换技术为核心的新型频率跟踪触发器，详细分析了频率跟踪触发器的设计思路和设计过程，实现了在同一移相控制电压下，当同步电压频率大范围变化时触发器输出触发脉冲的电角度保持不变的目的，满足了项目对同步电压频率变化时晶闸管准确触发的要求；并通过实验和工程实际应用验证了触发器的性能。设计了基于SIMATIC S7-200 PLC软硬件的故障诊断系统并调试了各项监控、诊断功能；实现故障条件下准确、迅速及可靠的保护。

The selected subject gives a general design of the grating auto testing instrument, by using the characteristics of orthogonal A and B signals output by optical encoder and symmetrical black and white linear transmission grating bar, and analyzing the means of the high electrical level of signals change to number of counter pluses.

本文通过分析了编码器输出两路信号的正交性(相位相差90°)与直线透射式光栅黑白栅条的分布均匀性的特性，应用把高电平宽度转换为计数脉冲的个数的测试方法，给出了光栅自动测试仪的总体设计方案。

The nanoparticle composite photoemissive thin film, with ultrafast photoelectric response speed that is more than 10〓 folds faster than normal semiconductor photoemissive materials, is a promising material for detecting super-short laser pulses.

纳米粒子复合光电发射薄膜具有优于目前半导体光电材料三个量级以上的超快飞秒光电响应速度，是可用于检测脉宽短至飞秒的超短激光脉冲的光电材料，在现代光通信朝着超快信息流传输方向发展的形势下有很好的应用前景。

The principle and the mathematical model of reduced-dynamic precise orbit determination are discussed based on precise point positioning technique by zero-differenced dual-frequency P codes and epoch-wise differenced carrier phase data. Then the key issue in the reduced-dynamic POD, i. e. the pseudo stochastic pulses and their impact on orbit determination accuracy are analyzed.

论述了基于低轨卫星星载GPS双频观测值的精密单点定位技术的简化动力学定轨方法的数学模型，分析了简化动力学定轨中的关键问题―伪随机脉冲的设置问题及其对定轨精度的影响。

Because the length of optical fiber delay lines has direct effects on the volume of laser warning system, the optical loss and the false alarm ratio, the optical fiber delay lines are permuted and combined based on the property of the laser pulse and the optimization theory.

针对光纤延迟线的长度对激光告警器的体积，光学损耗，虚警率等因素有着直接的影响，在此利用激光脉冲的相关特性，通过最优化理论对光纤延迟线进行排列组合，从而解算出光纤总长度的最小值，为激光测向告警器优化设计提供了重要的理论依据。

According to Andy Mazzara, the director of the Institute for Non-Lethal Defence Technologies at Pennsylvania State University, prototypes of such devices use a laser to create an ionised channel of air through which an electromagnetic pulse is directed.

根据在宾夕法尼亚州立大学非致命性防卫技术学院主任Andy Mazzara的研究报告，这些设备的原型使用的是一束激光光束，通过电磁脉冲的指向，来创造空气中的离子通道。

Only oneA/D converter is needed to complete complex quadrature translation and digital downconversion, get in-phase component and quadrature component in digital field, and also,after intra-pulse compression is done, the signal-to-noise ratio is raised, and inter-pulsecompression is done in digital field, and finally, high range resolution profile is got.Two-step stretch processing method for MMW high-resolution RADAR is presented.

计算并优化了毫米波雷达中频信号带通采样的最佳采样频率，应用现有的集成电路技术实现对中频信号的直接采样、用一个A／D转换器在数字域完成复数正交变换，在数字域完成下变频、获得同相信号和正交相信号、完成对子脉冲的脉内压缩、完成对脉内压缩信号的第二次脉间压缩，从而获得高分辨一维距离像。

According to the requirement of CNG engine, a high-energy sequential direct ignition system without ignition distributor is designed. Based on the method used in spark advance and dwell control, the system can reach the ignition energy of lean burn CNG engine and work very well in all conditions.

针对增压天然气发动机所需点火能量的要求，研制成功无分电器的高能顺序直接点火电控系统，提出了一种控制各缸点火时刻和点火线圈导通时刻的方法，有效的防止了脉冲的丢失，满足了天然气稀燃所需的点火能量。

The trailing edge of the fourth notch, which causes the pulse, is four degrees before top dead

产生的脉冲的第四凹槽的后缘，位于相应的活塞在前上死点4度的位置的位置上。

One sideband of the generated SSBRZ signal is suppressed more effectively without distortion of the optical pulses.

通过合理设置调制器的偏置电压，使产生的SSBRZ信号的一个边带得到更有效的抑制，而且没有引起光脉冲的变形。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。