Research on continuous ore drawing and haulage equipment for underground metal mines has widely been done in main foreign countries with mining industry.
国外主要矿业国家对地下金属矿山连续出矿运矿设备进行了深入的研究。
In some foreign countries, it is more than 20 years since the study on technology for deepsea polymetallic nodule mining has been conducted, and many results have been achieved in this field.
国外在深海多金属结核开采技术研究这一领域中开展研究工作历时20余年，取得了许多成果。
The paper introduces the assessment ways and methods of mining rights that are generally adopted at present. It also introduces some relevant issues on mining rights in other foreign countries.
本文主要介绍了我国现在普遍采用的矿业权评估途径和评估方法，并根据实际运用的情况有针对性地强调了一些问题。
The paper introduces the assessment ways and methods of mining rights that are generally adopted at present. It also introduces some relevant issues on mining rights in other foreign countries.
本文主要介绍了我国现在普遍采用的矿业权评估途径和评估方法，并根据实际运用的情况有针对性地强调了一些问题。
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