There exists on optimal value of magnetic focusing field and beam voltage, which can minimize the ion noise amplitude.
束电流与束电压确定，存在最佳的磁场使离子噪声幅度最小。
The significance of using a harmonic magnetic field in SFC (Sector Focusing Cyclotron) and the requirements for the harmonic power supplies are described roughly.
简要描述了扇聚焦回旋加速器（SFC）中使用谐波场的意义和对谐波电源的要求。
We discussed the stability of both radial movement and axis movement of charged particle in infirm focusing magnetic field and obtained the term of stability.
我们探讨了弱聚焦磁场中带电粒子轴向和径向运动的稳定性问题，得到稳定性条件。
The calculating formulas in the paper are available and convenient for computer aided design of focusing magnetic field of camera tube.
文中计算公式对于计算机辅助设计摄像管聚焦磁场是适用和方便的。
According to the special measurement requirements of the magnetic field distribution of radar electromagnetic focusing system, a automatic measurement system based on vision localization is developed.
针对雷达电磁聚焦系统磁场分布的特殊检测要求，开发了一套基于视觉定位的磁场分布自动检测系统。
The result shows that under the constant current exciting mode, the exciting magnetic field is the strongest and has a focusing effect, which improves the eddy detection sensitivity considerably.
结果表明，在恒流激励方式下的激励磁场最强，且具有聚焦效果，因而可有效地提高涡流探伤的灵敏度。
It is shown that the phenomenon is due to self-induced action in alternative magnetic field of electric solenoid and is of no effect to the point of magnetic focusing.
结果表明，此现象产生于螺线管交变磁场中的自感应作用，对于碰聚焦点不产生影响。
It is shown that the phenomenon is due to self-induced action in alternative magnetic field of electric solenoid and is of no effect to the point of magnetic focusing.
结果表明，此现象产生于螺线管交变磁场中的自感应作用，对于碰聚焦点不产生影响。
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