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电视,早已突破文化娱乐的范围,广泛地应用于科学技术的各个方面。现在工业电视又有一些新的发展。钻杆上长“眼睛”在钻探过程中,需要经常采取岩心,以研究钻头所穿过的各种岩层。这
TV has already broken through the scope of culture and entertainment and is widely used in all aspects of science and technology. Industrial TV now has some new developments. The long “eyes” on the drill pipe require cores to be drilled during the drilling process to study the various rock formations the drill bit passes through. This