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for subject
Drilling
containing
正规
|
all forms
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in specified order only
Chinese
English
正规
扣
扣型
regular
正规
扣型
regular
正规
扣型接头
regular tool joint
正规
扣型螺纹
regular style connection thread
正规
扣接头
regular tool joint
正规
接头
regular joint
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