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for subject
Drilling
containing
形螺纹
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all forms
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in specified order only
Chinese
English
一种钻杆螺纹接头形式
4扣/英寸
extra hole
偏梯
形螺纹
套管
buttress casing
V
形螺纹
vee type thread
螺纹形的
serpentine
螺纹牙形角
度
thread angle
锥
形螺纹
taper-end thread
锥
形螺纹
规
lead and taper gage
锥
形螺纹
连接
taper joint
锥形公螺纹
tapered male thread
锥形母螺纹
tapered female thread
锯
形螺纹
buttress thread
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