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外加厚 wàijiāhòu
met. external-upset
oil external upset
〔钻杆套管〕外加厚 wàijiāhòu
earth.sc. external upset
外加厚管子 wàijiāhòu
mech. external upset
外加厚: 37 phrases in 8 subjects
Drilling8
Earth sciences3
General1
Mechanics2
Metallurgy1
Mining2
Oil / petroleum12
Technology8