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捷克斯洛伐克矿石研究院(布拉格)对新发现的和勘探完的矿床之钨一锡矿石,进行了详尽的试验。研究工作之任务是:一方面确定各种矿石之可选性及其实际利用的可能性,另一
The Czechoslovak Institute of Ore Research (Prague) conducted extensive tests on tungsten-tin ore from newly discovered and explored deposits. The task of the research work is to determine on the one hand the possibilities of the various minerals and their actual utilization and the other