利用麦克斯韦方程组和场的轴对称性，分别对含不稳定电荷源和不稳定电流源的轴对称非静态空间电磁场进行了研究。
By using the Maxwells equations and axial symmetry, the axial symmetric unstable electromagnetic field with unstable charge source and unstable current source is studied.
利用麦克斯韦方程组和场的轴对称性，分别对含不稳定电荷源和不稳定电流源的轴对称非静态空间电磁场进行了研究。
By using the Maxwell's equations and axial symmetry, the axial symmetric unstable electromagnetic field with unstable charge source and unstable current source is studied.
利用麦克斯韦方程组和场的轴对称性，分别对含不稳定电荷源和不稳定电流源的轴对称非静态空间电磁场进行了研究。
By using the Maxwell's equations and axial symmetry, a method on calculating non-static axial symmetry fields with unstable charge source is given.
该电流源具有精度高、结构简单、工作稳定、操作方便、成本低廉、带负载能力强等优点。
It has advantages on high precision, simple construction, performance stable, easy operation, low cost and loaded capability.
电流源及保护控制系统是超导磁体系统的重要组成部分，其主要任务是为超导磁体系统提供稳定电流并实现可靠的保护控制。
The power supply is an important part of the superconducting magnet system, it affords both steady current and reliable protection for the superconducting magnet system.
该电路采用耗尽型NMOS管作电流源器件，结合负反馈，实现了稳定的电压基准。
A depleted NMOS transistor, which was used as current source, and a negative feedback loop constitute a stable voltage reference.
若在适当端口施加正弦电压源，则网络的稳定性取决于进入端口基波电流的实功与虚功成份的符号值。
When exciting Sin voltage source is applied to proper port, the stability of network depends on the sign of active and reactive components for fundamental-wave current entering port of networks.
电流源保护控制系统是超导磁体系统的重要组成部分，其主要作用是为超导磁体系统提供稳定电流并实现可靠的保护控制。
The current source is an important section of the superconducting magnet system. It affords both of the steady current and reliable protection for the superconducting magnet system.
偏置电流源电路的设计：利用带隙基准电压源提供的，通过运算放大器为系统其他的模块提供一个与温度无关的稳定的电流偏置。
The current bias design: Taking advantage of the bandgap reference voltage, the temperature independent current bias for the system is designed by an operation amplifier.
偏置电流源电路的设计：利用带隙基准电压源提供的，通过运算放大器为系统其他的模块提供一个与温度无关的稳定的电流偏置。
The current bias design: Taking advantage of the bandgap reference voltage, the temperature independent current bias for the system is designed by an operation amplifier.
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