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键槽扩大器
释义
键槽扩大器
Encyclopedia
工学
井下工具
释
keyseat reamer
键槽扩大器
连接于钻铤上方,用于破坏井身键槽,使钻铤免于键槽卡钻的装置。又称键槽破坏器。
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vitrescence
vitrescible
vitric
vitrification
vitrification of soil polluted by heavy metals
vitrification phenomenon
vitrified bond superabrasives
vitrified cryopreservation
vitrinite reflectance
vitrophyric
vitroporphyritic texture
Vitruvian Man
Vitruvius
Vitruvius crane
Vitruvius Pollio
Vitsyebsk
Vitt
vitta
Vittoria Colonna
Vittorino da Feltre
Vittorio Alfieri
Vittorio De Sica
Vittorio Storaro
Vittorio Zonca
vitual reality of construction engineering
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