Ho, J.E.J.E.HoYoung, H.T.H.T.Young2011-02-112018-06-282011-02-112018-06-282008-07http://ntur.lib.ntu.edu.tw//handle/246246/222970en-US[SDGs]SDG7The Analysis on Penetrating Efficiency in High-Energy Beam Drillingjournal article10.4028/www.scientific.net/KEM.364-366.308