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焊接坡口 hànjiē pōkǒu
dril. groove
met. welding groove
oil weld groove
plast. chamfer; weld opening
焊接坡口: 35 phrases in 8 subjects
Automobiles1
Electric machinery1
Metallurgy17
Nautical1
Nuclear and fusion power1
Oil / petroleum2
Plastics3
Technology9