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偏心扩眼钻头
释义
偏心扩眼钻头
Encyclopedia
工学
钻井装备
释
eccentric reaming bit
偏心扩眼钻头
常规阶梯钻头的扩眼部分的旋转轴线偏离钻柱旋转轴线一定距离,假想存在一个以钻柱旋转轴线为中心线直径等于的圆柱,仅保留扩眼部分在假想圆柱内的刀翼,同时领眼部分和上部钻柱也必须落在假想圆柱内的结构限制的钻头。
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surface force apparatus
surface force apparatus (SFA)
surface free energy
surface-free from singularities
surface function
surface functional coating
surface functional group
surface functionalization of polymer materials
surface gradient
surface gravity
surface grinder
surface grinding
surface hardness
surface harmonic
surface harmonic function
surface heater
surface heat transfer coefficient
surface heat treatment
surface hopping
surface hopping model
surface humidity resistance
surface impedance
surface impedance dispersion
surface imprinting
surface induced dissociation
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