...一.电子发射源 热场在总发射电流(Total emissioncurrent)、最大探针电流(Maximum probecurrent)、电子束噪声(Beam noise)、发射电流漂移(..
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scanning-beam noise 扫描射束噪声
Experimental results show IL correction method can eliminate beam hardening effect and suppress the projection noise enlargement effectively in correction process.
实验结果表明,IL校正法能去除射束硬化的影响,并能有效地抑制校正过程中投影噪声的放大。
Additionally, the unit's rigid frame and beam chassis helps to reduce vibration and a low-leakage R-core transformer minimizes the interference of digital noise.
此外,该单位的刚架梁底盘有助于减少震动和低泄漏的R -核心变压器的干扰最小的数码噪音。
In the prediction of sleeper radiation noise, the finite element beam model of sleeper is more suitable.
最终得出在预测轨枕辐射噪声时,轨枕梁有限元模型更加适合。
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