Introduction is made on the development, technical parameters, main features, version verification test, production trial and appraisal of CD - 3 core drill.
介绍了CD-3型岩心钻机研制情况、技术参数、主要特点及型式检验、生产试验和鉴定情况。
Introduction is made on the development, technical parameters, main features, version verification test, production trial and appraisal of CD - 3 core drill.
介绍了CD-3型岩心钻机研制情况、技术参数、主要特点及型式检验、生产试验和鉴定情况。
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