某些合金在室温下是铁磁性的，而其它的是非铁磁性的。
Some of the alloys are ferromagnetic at room temperature, while others are non-ferromagnetic.
所说具有铁磁性的加氢催化剂选自镍系非晶态合金、阮内镍或磁性载体负载的贵金属催化剂。
The ferromagnetic hydrogenating catalyst is selected from non-crystalline nickel alloy, Raney nickel or magnetic carrier loaded noble metal catalyst.
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