问题描述：
英语翻译
very high rotation speeds above one million rounds per minute are difficult to achieve.The existing solutions to this problem feature a sub-millimetric steel ball,suspended by active magnetic bearings and spun by magnetic induction.This research finds promising applications in the field of inertial instruments,but the dimensions and geometry of a suspended stell ball below 1mm diameter make it technically difficult to use the rotor for applicationgs such as optical scanners,and optical choppers.
是关于永磁轴承的内容
very high rotation speeds above one million rounds per minute are difficult to achieve.The existing solutions to this problem feature a sub-millimetric steel ball,suspended by active magnetic bearings and spun by magnetic induction.This research finds promising applications in the field of inertial instruments,but the dimensions and geometry of a suspended stell ball below 1mm diameter make it technically difficult to use the rotor for applicationgs such as optical scanners,and optical choppers.
是关于永磁轴承的内容
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