If the vacuum near the cathode is too poor, it will generate spark, gas ionization and ion bombardment on cathode, which can result in a fast attenuation of the emission current.
如果碳纳米管阴极附近的真空度太低，将产生打火、气体电离、离子回轰阴极等问题，将导致阴极发射电流的迅速衰减。
Combined with the problems during the experiment, design a improved testing circuit of Direct Current Attenuation Method.
结合试验过程中遇到的问题，给出了改进的直流衰减法测试电路。
Energy dissipation or wave height attenuation is analysed theoretically for water waves propagating on a non-uniform current.
本文对波浪在非均匀流动中传播时的波能耗散或波高衰减进行了研究。
Near the critical point of the RLC-circuit, the residual voltage waveform changes form non-oscillating attenuation mode to distinct across zero oscillating mode when the peak current increases.
在RLC回路临界点附近，随着冲击电流峰值的增大，残压波波尾从非振荡衰减过渡到大幅度的过零振荡；
Current work is focused on seismic attenuation mechanism in porous rocks, and the remaining problems include physical description and numerical simulation about complex porous rocks.
目前的研究主要集中于探索孔隙介质的地震衰减机制，存在的问题包括复杂多孔介质的物理描述以及数值实现。
The result of calculation indicated that the attenuation of source-drain current caused by the source-drain resistance increased when temperature increased.
对寄生的漏源串联电阻及其温度特性进行了详细探讨，计算结果表明，漏源串联电阻给漏源电流造成的衰减在温度升高后变得很大。
The relative current attenuation decibel value was used to indicate the microwave attenuation anisotropy.
从实验角度分析了微波衰减各向异性与力学各向异性之间的统计相关情况。
By changing the film size can change the ferromagnetic resonance frequency and eddy current loss, and achieve the maximal attenuation to the noise with specific frequency.
通过改变薄膜尺寸可以改变薄膜的亚铁磁共振频率和涡流损耗，从而对特定频率的噪声衰减达到最佳效果。
According to this paper, the frequency and intensity of the signal attenuation on transmission line are mainly depended on the ferromagnetic resonance frequency and eddy current loss.
通过本文的研究表明，传输线上信号的衰减频率和强度主要依赖于磁性薄膜材料的亚铁磁共振频率和涡流损耗。
Increasing the eddy-current losses will not change the frequency of attenuation peak, but will increase the intensity of attenuation.
涡流损耗的增加不会改变衰减峰值的频率，但是会增大衰减强度。
Increasing the eddy-current losses will not change the frequency of attenuation peak, but will increase the intensity of attenuation.
涡流损耗的增加不会改变衰减峰值的频率，但是会增大衰减强度。
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