Results 101 to 110 of about 200 (119)

同轴线中雷电波传输暂态特性的分析

open access: yesDianci bileiqi, 2019
针对同轴线中雷电波传输特性的问题,通过对同轴波导暂态响应和非均匀传输线理论进行分析,采用冲击电压波发生器来模拟1. 2/50μs雷电波进行试验。得出:雷电波在均匀同轴线中几乎不发生畸变,波形衰减不明显,但在并联气体放电管(Gas Discharge Tube,GDT)的同轴线中发生了畸变,出现不同程度的振荡,产生高次模;随着同轴线长度的增加,雷电波畸变的程度逐渐变小,高次模出现的频率逐渐减少,波形振荡的周期也越来越少;在不同位置并联相同气体放电管,距离输出端越远其振荡幅值越大,其中高次模的成分越丰富 ...
李祥超, 蔡露进, 徐晓培, 田原
doaj  

[State-of-the-art in peripheral nerve injury diagnosis and therapy]. [PDF]

open access: yesZhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Sun J, Chen L.
europepmc   +1 more source

[Thoughts and Prospects on Precision Control and Intelligent Positioning Robotic Systems Applied in Nasojejunal Feeding Tube Placement]. [PDF]

open access: yesSichuan Da Xue Xue Bao Yi Xue Ban
Qiu Y   +9 more
europepmc   +1 more source

[An radio frequency coil design for rat spinal magnetic resonance imaging at 9.4 T]. [PDF]

open access: yesSheng Wu Yi Xue Gong Cheng Xue Za Zhi, 2019
Xu Y, Yang H, Zhong K.
europepmc   +1 more source

[Biomechanics test of fixation of star-shaped six-part patellar fractures with petal-shaped poly-axial locking plate]. [PDF]

open access: yesZhongguo Xiu Fu Chong Jian Wai Ke Za Zhi, 2018
Meng D   +7 more
europepmc   +1 more source

[Effects of different methods on drying root canal by near-field microwave detection system]. [PDF]

open access: yesBeijing Da Xue Xue Bao Yi Xue Ban, 2019
Wang JS, Wang PY, Liang YH.
europepmc   +1 more source

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