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脉冲时延
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  pulse delay
     In this paper, the pulse delay spread profile(PDSP) of digital mobile communication is studied. The relation between PDSP and bit error rates on GMSK modulation is analyzed, and the models of theory and computer simulation for bit error rates performance of GMSK are found out with affectation of four typical kinds of PDSP.
     通过对数字移动信道脉冲响应时延展宽包络 ( PDSP)波形的研究 ,分析了GMSK调制下的脉冲时延展宽包络与误码率之间的变化关系 ,建立了两者之间关系的理论模型和计算机仿真模型 ,同时给出了在四种较为典型的 PDSP作用下 ,GMSK误码率特性的计算机仿真结果。
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     Furthermore, PMD in this PCF has been measured by pulse delay method and fixed analyzer method. The result shows that the birefringence of the PCF is about 1.25×10 -3, and the high birefringent PCF can be used as dispersion compensation component in optical fiber communication system.
     运用脉冲时延法和固定分析仪法对这种高双折射光子晶体光纤的偏振模色散进行了实验测量,测量得到其偏振模色散参量可达4154ps/km,对应的模式双折射度为1.25×10-3.这种新型的高双折射光纤可用于补偿光纤通信系统中的偏振模色散.
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  “脉冲时延”译为未确定词的双语例句
     Controlling Chaos in Hybrid Systems:Impulsive Delayed Feedback Control Approach
     混杂系统中的混沌控制:脉冲时延反馈控制方法
     Suitable initial time delay and pulse chirp of pulses can improve the suppression and compensation for the distortion.
     合适的初始脉冲时延和初始脉冲啁啾有利于频域相位共轭技术对交叉相位调制所致信号失真的抑制.
短句来源
     Pulse Delay-Temperature Dependence in Fibre
     光纤中脉冲时延与温度的关系
短句来源
     Consequently, the wavelength resource in mainstream WDMA network becomes exhausted; It is difficult in realizing OTDMA technique because the optical pulse compression、optical pulse time delay、optical equalizing amplifier、optical dispersion compensation and optical regeneration technique is needed to adopted,which can not be easily realized;
     光时分复用(OTDM)技术,由于需采用光脉冲压缩、光脉冲时延、光均衡放大、光色散补偿、光时钟提取、光再生等技术,而这些技术的实现也并非易事;
短句来源
     This paper describes pulse delay-temperature dependence in fibre.
     本文介绍光纤中脉冲时延与温度的关系。
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  相似匹配句对
     Analysis of Breakdown Time Delay Under Impulse Voltage
     脉冲电压下击穿时延分析
短句来源
     Pulse Delay-Temperature Dependence in Fibre
     光纤中脉冲时延与温度的关系
短句来源
     Pulse plating of Nickel
     脉冲镀镍
短句来源
     Pulse Nickl-plating
     脉冲镀镍
短句来源
     Stability of networked control systems with time-delay
     时延网络控制系统的稳定性
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  pulse delay
The effect is attributed to the periodic cooperative exchange between forward and backward waves in a sample and its termination at the moment corresponding to the pulse delay time.
      
The possibility to obtain a pulse delay time of up to 113 ± 3 ns in a 300-MHz-wide frequency band is experimentally demonstrated.
      
Time-dependent wave packet approach to the pulse delay effect upon RbI photoelectron spectrum
      
The investigation includes the measurement of energy levels (ionic signal vs last transition frequency) and radiation lifetime (ionic signal vs ionizing electric-field pulse delay) of the states investigated.
      
Population transfer through an autoionizing state by pulse delay
      
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This paper describes pulse delay-temperature dependence in fibre. Some ambiguity is also clarified in this paper.

本文介绍光纤中脉冲时延与温度的关系。文中还澄清一些易弄混的概念。

The temperature characteristics of the delay in optical fiber and the test methods are discussed.The test system composed of the optical line terminal equipments and associated instruments,the measured results,data processing and error analysis are introduced.The test results indicates the delay characteristics in optical fiber is nonlinear in low temperature region.

在讨论了光纤传输时延温度特性及其测量方法的基础上,介绍了利用光端机房设备和仪表进行脉冲时延法测试的系统、测试结果、数据处理和误差分析。实测结果表明,在低温范围内光纤传输时延随温度并非呈线性变化

AIM To investigate effects of pulsed electromagnet ic fields (PEF) on hemorheology of mice. METHODS The mice were randomized into 4 groups. The first 3 were electromagnetically radiated at the frequency of 15Hz, electromagnetic pulse of 5 ms and under the intensities of 2×10 -4 T, 4×10 -4 T and 8×10 -4 T respectively for 10 days (6 h/per day). The last group served as control. On the 10th day, blood was taken from the right eye of each mouse to deter mine their hemorheological indexes such as...

AIM To investigate effects of pulsed electromagnet ic fields (PEF) on hemorheology of mice. METHODS The mice were randomized into 4 groups. The first 3 were electromagnetically radiated at the frequency of 15Hz, electromagnetic pulse of 5 ms and under the intensities of 2×10 -4 T, 4×10 -4 T and 8×10 -4 T respectively for 10 days (6 h/per day). The last group served as control. On the 10th day, blood was taken from the right eye of each mouse to deter mine their hemorheological indexes such as kematokrit and apparent viscocity of whole blood high and low shears. RESULTS In the comparison between hemorheological indexes of the low electromagnetically radiated groups and that of the control, except that the aggregation indexes of RBC of the 2×10 -4 T group (A) were not significant, the kematokrit and the apparent viscosity of whole blood high and low shears as well as the aggregation indexes of RBC of the radiated groups were significantly lower than that of the control. CONCLUSION Low intensity pulsed electromagnetic field can lower packed cell volume and the apparent viscosity of whole blood high and low shears and improve blood fluxion. Therefore, low intensity PEF is applicable to the treatment and prevention of cardiovascular diseases.

目的 探讨低强度脉冲电磁场对小鼠血液流变学指标的影响 .方法 将小鼠分为 4组 ,前 3组分别暴露于脉冲频率为 15 Hz,脉冲时延为 5 ms,强度分别为 2× 10 - 4 T,4× 10 - 4T,8× 10 - 4 T的磁感应强度下 ,时间为 10 d,每日 6 h,后 1组为对照组 ,第 10日统一摘右眼取血 ,测定其血液流变学指标中的血细胞比容及全血高切、低切表观粘度 .结果 低强度低频率脉冲电磁场辐照组与对照组比较 ,除 2× 10 - 4 T组的红细胞聚集指数不显著外 ,磁场辐照组的血细胞比容 ,全血高切、低切表观粘度及红细胞聚集指数均明显低于对照组 (P<0 .0 5或 P<0 .0 1) .结论 低强度脉冲电磁场可以降低血细胞比容及全血高切、低切表观粘度 ,可提高血液的流动性 ,有利于心、脑血管疾病的治疗和预防

 
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