例句 /

Gold reserve in China is characterized by wide and relatively concentrated distribution, large number of medium-small deposits and small number of large-superlarge deposits, slightly lower grade, big proportion of the micro disseminated deposits, large vo

Gold reserve in China is characterized by wide and relatively concentrated distribution, large number of medium-small deposits and small number of large-superlarge deposits, slightly lower grade, big proportion of the micro disseminated deposits, large vo

我国金矿的基本特点是:分布广、较集中;中-小型矿床多,大型-超大型矿床少;金矿品位偏低;微细浸染型金矿比例较大;伴生金矿储量大,且具重要价值;金银密切共生。