...网站】 关键字:井下采煤;技术和工艺;现状和发展趋势 [gap=724]Keywords: underground coal mining; technology and techniques; status and development trend ...
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If the technology and techniques are really advanced, co-operation can be prolonged.
如果技术确实先进,合作期限可以延长。
Taking a course or attending a conference is just the beginning of learning new technology and techniques.
参加课程培训或者会议只是学习新技术和技能的开始。
Well logging technology and techniques for gas drilling, foam drilling and casing drilling are summarized and analyzed in this paper.
简要介绍了气体钻井、泡沫钻井和套管钻井等特殊钻井技术。
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