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为了便于多金属结核的开采、结核分布规律的探讨和矿藏储量计算，对ＤＹ８５－４航次所取得的多金属结核抽样样品进行了逐个三轴粒径测量和称量工作，并进行了统计分析和分形研究，得到了多金属结核的粒径统计分布规律。从而为集矿机的设计提供了科学依据．
In order to facilitate the exploitation of polymetallic nodules, the study of the distribution of nodules and the calculation of mineral reserves, the three-axis particle size measurement and weighing of polymetallic nodules sampled from DY85-4 voyage were carried out and the statistical analysis was carried out Fractal research, obtained statistical rules of the distribution of particle size of polymetallic nodules. Thus providing a scientific basis for the design of the miner.