respective specific energy / steel-backing block / strength energy / software traces / steel horn / time efficient solution / final solution / energy loss / thin steel bar / The steel stem / energy parameter / software program / important tool / energy / /
Organization
National Aeronautics and Space Administration / Translation / /
Person
Shu Du / Benjamin P. Dolgin / Power / Thomas Peterson / Cthe / Stewart Sherrit / / /
Position
mechanic / head of diameter / model / electrical driver / electric driver / Driller / /