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日本科学技术厅金属材料技术研究所金属化学研究室研制出一种与传统方法完全不同的金属微粒制造法。平均粒度小于1微米的金属微粒称为超微粒子,具有通常的块状金属所没有的性质,所以正在发展用来作为密度磁性记录材
Japan Institute of Science and Technology Metal Materials Technology Research Institute of Metals and Chemical developed a completely different from the traditional method of manufacturing metal particles. Metallic particles having an average particle size of less than 1 micrometer are called ultrafine particles and have the properties that ordinary bulk metals do not have and are therefore being developed for use as density magnetic recording material