脉冲时间

The frequency test scheme of this cymometer is enumerative. In this system, vibratory circuit output a time signal of strobe to acquire the frequency of the geodesic signal by count the pulse after the geodesic signal is modulated.

该频率计采用计数式测频方案，由振荡电路产生标准闸门时间信号，对被测信号整形处理后进行脉冲计数直接得到被测信号的频率值。

The cooperation program between China, Australia and Great Britain,"Pulsar timing observation at 18 cm using 25 m radio telescopy of Urumqi", is introduced for its significance, reconstruction of the receiver and its sensitivity.

对正在执行的由中、澳、英合作的"利用乌鲁木齐25m 射电望远镜在18cm 波段上进行脉冲星脉冲到达时间的观测研究"项目，就其课题意义、接收系统的技术改造和观测灵敏度等进行了介绍。

Using this prototype, in cooperation with the Academy of Military Medicine of P.

实验研究了脉冲钛宝石激光器的输出特性，包括时间特性、调谐特性和输出模式特性。

By rational configuration of the low voltage solid circuits and hydrogen thyratron circuits,long precise delay and low jitter of high voltage output can be obtained.

采取低压固体电路与大小氢闸管电路的合理配置，较好地解决了精密长延迟和高压脉冲输出时低延迟时间晃动的难点。

If the minimum pulse of the PFD is too wide, the PLL has a longer lock time.

如果PFD的最小脉冲太宽，则PLL具有较长的锁定时间。

Empiric results indicate that there is a bidrectional relationship between FDI and economic growth while there is a unilateralist relationship between FDI and export; To utilize impulse response function and variance decomposition of FDI to reveal the effect of FDI on Chinese macro economy.

论文根据中国1980～2005年的时间序列数据进行实证分析：运用Granger因果关系检验方法对FDI与中国经济增长、出口的关系进行检验，发现FDI与经济增长之间存在着双向的因果关系，FDI与出口之间只存在单向的因果关系；通过VAR模型中FDI的脉冲响应函数和方差分解的方法，研究FDI对中国宏观经济的冲击作用和效果。

In order to improve the robustness of time delay filter, vector diagram and zero placement method are applied to design robust time delay filter.

并当系统的模型参数未知时，提出了自适应时滞滤波器的方法，通过在线辨识系统的模型参数，来实时校正滤波器的脉冲幅值和时间，以适应系统参数不确定的情况。

The ultrafast laser technology is expanding to new waveband as well as to a less during time.

不断深入的研究工作则要求超短激光技术继续朝着更短的脉冲持续时间和新的激光波段发展，这一般可通过飞秒激光同物质的非线性相互作用得到。

Moreover, the system will fulfill the requirement that we can use a PC to control the PRF and the wideness of the pulse anytime.

系统的延时时间，触发信号的频率和脉冲宽度能够根据实际需要通过远端的PC进行实时调整。

Methods After New Zealand rabbits were anethetized anaesthesia,60%meglucamine diatrizoate were injected speedily.Vulnerated by BIMⅣ bioimpactmachine,400KV the highspeed Xray photography was used to observe the compression and deformation of the liver during the direct impact of the central part of the xiphoid process in different delay time.

新西兰兔麻醉后，快速推注60%泛影葡胺40ml，用BIMⅣ型生物撞击机致伤，在钢球撞击剑突致伤的同时，400KV高速脉冲X线机在不同延迟时间拍摄撞击瞬间腹腔及肝脏的变形情况。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。