波出现率降低，潜伏期延长或消失；
There were no significant difference in the overall abnormal rate between F wave and the ulnar nerve motor conduction.
F波各参数总异常率与尺神经运动传导各参数总异常率无统计学差异。
Objective: To investigate the significance of H reflex, F wave(FW)and nerve conductive velocity(NCV)in early diagnosis of Guillain-barre syndrome.
目的：分析比较H反射、F波（FW）和神经传导速度（NCV）在早期诊断格林-巴利综合征以及判断预后中三者的作用和灵敏度。
F wave incubation period and abnormal rate were detected at the wrist area of median nerve and malleolus area of posterior tibial nerve by strong electric stimulation.
并用超强电刺激在正中神经腕部及胫后神经踝部检测F波潜伏期及出现率。
Objective:To evaluate the diagnostic value of F wave in diabetic peripheral neuropathy (DPN) by comparing the difference in F wave between diabetes mellitus and healthy subjects.
目的：研究糖尿病患者及健康人F波，探讨其对诊断糖尿病周围神经病（DPN）的意义。
The authors introduce a wind speed single parameter sea wave spectrum, present the fuzzy grading statistic method of wave height and period, and thereby give the method for making the f…
鉴于此，介绍了风速单参数海浪谱，并提出了对波高及周期统计的模糊分级统计方法，在此基础上给出了全面分析海洋环境载荷不确定性的模糊随机海浪谱及载荷谱的制作方法。
F ROM above, a method to realize the testing of cable partiality online by ultrasound standing wave is advanced.
在此基础上本文提出了利用超声驻波的方法实现电缆偏心在线检测。
Aim To observe the changes of P100 wave in F-VEP in acute methylismus.
目的探讨急性甲醇中毒患者F—VEP的P100波形的变化。
Because the Local wave T-F spectrum can be showed in the gray image, so we use the moment invariants of time-frequency image as the fault features.
由于局域波时频谱可以表示为灰度图像。因此，利用图像信息的不变矩进行故障特征提取。
The strengths of the polarization wave oscillator are calculated. The material dispersion and the zero dispersion wavelengths f…
讨论了氯化铯型离子晶体束缚激子的结合能、极化波振子强度、零色散波长和微观参数之间的关系。
The experimental results show that the system has well performances in stabilizing voltage and minimizing wave distortion, and it also has f…
实验数据表明该系统具有良好的稳压性能和很小的波形失真，并且能够进行自检测、过流、过压、过热和短路保护等功能。
The relationship between H-reflex and F-wave features and clinical neurological signs was observed.
观察h反射和F波的特征表现与临床体征之间的关系。
Objective To investigate the features of F-wave and nerve conduction in patients with amyotrophic lateral sclerosis (ALS).
目的探讨肌萎缩侧索硬化症(ALS)F波和神经传导改变的特点。
Objective To discuss the change rules and characters of F-wave conduction velocity about ischium nerve trauma caused by injecting medicament.
目的探讨药物注射性坐骨神经损伤F波传导速度变化规律及特点。
It is showed that quasi-total reflection would occur when the electromagnetic wave traveled f.
曲线显示当电磁波由电导率大的介质向电导率小的介质传播时，将发生类全反射。
Method: Using electromyography at bedside recording motor nerve conduction, needle electromyography, H-reflex and F-wave.
方法床旁肌电图检查，观察患者运动神经传导，针极肌电图，H反射及F波。
The strain sensing properties of F-P sensors are researched based on coupled-wave theory.
研究了使用此传感测试系统实现纵向调整索预应力及振动监测的理论和方法。
Methods To collect 63 cases with neck and waist marrow damnification, analyze their F-wave results and compare abnormity degree of F-wave examination with patients comeback circa.
方法收集63例颈腰髓损伤患者，对其F -波检查结果进行分析，并对F -波检查异常程度与患者恢复随访情况进行比较。
Several film structures such as double cut-off structure, F-P structure, multi-half-wave structure are given, and their bandwidth estimation formulas are concluded.
首先给出双截止组合型、F - P型、多半波型等几种膜系结构，归纳了相对带宽估算公式。
Objective To discuss the relationship between F-wave change of patients with neck and waist marrow damnification and prognosis.
目的探讨颈腰髓损伤患者F-波变化及其与预后的关系。
Objective To evaluate the remote F-wave and excitability of the spinal motoneurons changes after local intramuscular administration of botulinum toxin type A.
目的观察A型肉毒毒素局部注射后远隔部位F波改变，揭示对脊髓运动神经元兴奋性的影响，探讨机制。
Objective To evaluate the remote F-wave and excitability of the spinal motoneurons changes after local intramuscular administration of botulinum toxin type A.
目的观察A型肉毒毒素局部注射后远隔部位F波改变，揭示对脊髓运动神经元兴奋性的影响，探讨机制。
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