Ductile iron is the alloy of iron, carbon and silicon, of which carbon is in the form of spherical free graphite.
球墨铸铁是一种铁、碳、硅的合金，其中碳以球状游离石墨存在。
Magnetic susceptibility of polygranular carbon and graphite materials obtained with a new measurement technique, which avoids free rotation of the samples in the magnetic field, was investigated.
用一种能避免样品在磁场中自由转动的新的测定技术测定了多粒炭石墨材料的磁化率。
This paper discussed the change of free-energy while graphite transforming into diamond and the physical-chemical factors affecting the preservation of diamond.
作者讨论了石墨转化为金刚石时的自由能变化和影响金刚石保存的物理化学因素。
Study on preparation of sulphur-free expanded graphite was made using nitric acid and phosphoric acid as steep in strong oxidizing environment.
以硝酸、磷酸为浸泡剂，在强氧化剂的作用下，对无硫膨胀石墨的制备进行了初步研究。
Study on preparation of sulphur-free expanded graphite was made using nitric acid and phosphoric acid as steep in strong oxidizing environment.
以硝酸、磷酸为浸泡剂，在强氧化剂的作用下，对无硫膨胀石墨的制备进行了初步研究。
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