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anti-whirl bit
释义
anti-whirl bit
Encyclopedia
工学
钻井装备
释
anti-whirl bit
抗涡动钻头
能够有效抑制钻头中心偏离井眼中心的涡旋运动的聚晶金刚石复合片(PDC)工具。
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keep records by notching wood
keep records by tying knots
Keep the Flag Flying
Keerqin Shadi
K-effect
Ke Garden
KEGG
Ke He
kehun (gag)
Keid
Keiiti Aki
Keiko Kishi
Keiko Matsuzaka
Keill
Keio University
Keirin
Kei school
Keisei
Kei Sek
Keisler
Keisler-Shelah isomorphism theorem
Keith Arnatt
Keith Haring
Keith Holyoake
Kejia fried green tea
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