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for subject
Drilling
containing
表面化
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Chinese
English
易磨损表面硬化
hard banding
易磨损表面硬化
hard facing
牙轮巴掌背面表面硬化
shirt-tail hardfacing
表面化
surface
表面硬化
hard surfacing
表面硬化
hard banding
表面硬化
hard face
表面硬化的
hard faced
钻头
裙部表面硬化
shirt-tail hardfacing
钻杆接头表面
敷硬质合金
环形硬化层
hard banding of tool joint
钻杆接头表面环形硬化层
hard facing of tool joint
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