The imprint of chalcography by the methods of graving, itching, pressing and scratching is very different from other kinds of printmaking.
铜版画中通过“刻，蚀，压，刮”等方法产生的痕迹有别于其他版种。
The mineral character, the mineral arisen sequence and the relation of mineral intergrowth are studied by mineralogy, chalcography, chymic analysis and EPMA, etc.
利用矿相学、化学分析和电子探针技术等对该矿床矿物特征、矿物生成顺序及共生关系进行研究、探讨。
The mineral character, the mineral arisen sequence and the relation of mineral intergrowth are studied by mineralogy, chalcography, chymic analysis and EPMA, etc.
利用矿相学、化学分析和电子探针技术等对该矿床矿物特征、矿物生成顺序及共生关系进行研究、探讨。
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