此外，由于制作这微粒的氧化铁是带有磁性的，就可以通过磁场来旋转其方向。
Moreover, since the form of iron oxide used to make the droplets is magnetic, a magnetic field can be used to rotate them.
带有磁性测速头的SE型号速度指示器特别适合于测量ipm, FPM和YPM中的低表面速度和较低表面速度。
The Model SE with its magnetic tachometer head is particularly suited to measuring low and very low surface speeds in IPM, FPM and YPM.
做为镍催化剂主要成分的镍是一种较强的磁性物质，因此所有的镍催化剂都带有磁性。
Nickel is the most fundamental component in every nickle catalyst and has the great magnetism, so every nickel catalyst has magnetism.
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