Reducing erosion of rail electrode surfaces with an external magneticfieldcontrol is put in this paper, and the study has also been investigated theoretically and experimentally.
文中提出了外加控制磁场减少轨道炮炮膛烧蚀的方法，并进行了相应的机理分析和试验研究。
2
We're also going to be using small magnets to control the sail because they will interact with the Earth's magneticfield.
我们还打算使用小型磁铁通过磁铁与地球磁场的相互作用来控制风帆。
3
The RF method shortens the ion extraction time, and increases the ion extraction efficiency. It can also control the plasma density by changing the magneticfield.