This is subeconomic mineralization related to minor dyke swarms.
这是与小岩脉群有关的准意义的矿化。
This is subeconomic mineralization related to minor dyke swarms.
这是与小岩脉群有关的准意义的矿化。
It has taken shape of a complete economic unit and a typical subeconomic zone.
大中城市密集,基础设完善,科教力量雄厚等优势十有利于关中次级区的发展;
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