例句與造句

1. The goal is to find the perturbation electron beam current density
2. The strong charge needed for radial confinement of the ions requires large electron beam currents of tens up to hundreds of milliampere.
3. Its negative potential controls the portion of emitted electrons entering into the accelerating field, i . e ., the electron beam current.
4. It's difficult to find electron beam current in a sentence. 用electron beam current造句挺難的