机译:Study on positioning of trenchless drill bits based on the principle of acoustic resonance
Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring Ministry of Education||School of Geosciences and Info-physics Central South University;
Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring Ministry of EducationKey Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring Ministry of Education||School of Geosciences and Info-physics Central South University||;