Providing adequate cooling for the Toyota Prius’s permanent-magnet motor adds significantly to the vehicle’s weight.

为了给丰田普锐斯（Toyota Prius）的永磁发动机提供充分的冷却导致该车的重量显著增加了。

youdao

The principle advantage of the REPM (rare -earth permanent magnet) generator over the common one is high efficiency and high reliability, and the weight between them is approximately equal.

采用稀土永磁材料的发电机在可靠性及效率上优于普通发电机，体积重量也相匹敌。

youdao

Use of Rare earth NdFeB permanent magnet, high efficiency and light weight, low energy consumption, high output power.

磁铁使用稀土钕铁硼永久磁铁，效率高且自重轻，耗能少，输出功率大。

youdao

Current designs for maglev trains rely on electromagnets, since nobody has been able to make a permanent magnet strong enough to lift the weight of a train.

ECONOMIST: Maglev trains

Atoms of the material in question are accelerated to very high speeds, stripped of electrons (rendering them positively charged) and passed by a magnet that separates the nuclei of the atoms by weight.

FORBES: Magazine Article

Neodymium magnets are the strongest permanent magnets known, and a neodymium magnet of a few grams can lift a thousand times its own weight.

FORBES: Endangered Elements Pose Threat To Green Energy