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shell reamer
mech.eng. 套式〔装〕铰刀; 空心铰刀
oil 空心绞刀; 空心扩眼器; 套式扩眼器
tech. 套形绞刀; 筒形铰刀; 套式铰刀
shell reamer: 4 phrases in 2 subjects
Engineering geology1
Technology3