tripod drill 三脚架式钻机
tripod rotary drill 三角架回转式钻机
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Perhaps it was not part of FEMA's Tripod terror drill.
可能这不是联邦应急管理局的反恐演习的一部分。
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He made the extraordinarily daring decision to incorporate in this sculpture a real mechanical drill, mounted on a tripod.
WSJ: Masterpiece: Jacob Epstein's Prophesy
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