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键槽扩大器
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键槽扩大器
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井下工具
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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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Matt Damon
matte
matte converting by P-S converter
mattedness
Matteo Bandello
Matteo Maria Boiardo
Matteo Ricci
Matteo Ricci's World Map
Matteo Ricco
Matteotti Crisis
matte painter
matte painting
matter
Matterania
matter-antimatter asymmetry
matter-antimatter cosmology
matter-antimatter symmetry
matter balance equations
matter bounce model
matter classification
matter cycle on the earth surface
matter dominated era
matter dominated universe
matter element analysis method
matter era
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