The physical core is crystallized in magnetic iron-nickel alloy-composite. The core is not hollow.

物质核心是磁性铁镍合金复合材料的结晶，其核心不是中空的。

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When the iron conveyor belt, metal detector to signal separator, which produces strong magnetic iron, iron will suck it up.

当输送带中有铁件时，金属探测器发信号给除铁器，使除铁器中产生强磁，将铁件吸上来。

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Objective To select the best magnetic iron-carbon composite microparticles as a drug carrier in magnetically targeted therapy of tumor.

目的选择一种最佳铁碳复合磁性材料作为药物载体，用于肿瘤的磁靶向治疗。

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The researchers first created separate nanoparticles of two materials, lead selenide and magnetic iron oxide, with precise dimensions.

ECONOMIST: MONITOR

Even so, he pointed out that some nanoparticles potentially serving as the basis for savvy devices of the future are already in use, including magnetic iron oxide particles used for advanced body imaging.

MSN: Scientists look to sperm to power nanobots

That would change the way the magnetic field of the iron oxide interacts with the semiconducting behaviour of the lead selenide.

ECONOMIST: MONITOR