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金属-金属密封
avia. metal-to-metal seal
金属—金属密封
oil.proc. metal-to-metal seal
金属—金属密封: 56 phrases in 11 subjects
Automobiles5
Aviation3
Chemistry3
Compressors1
Drilling1
Electronics6
Mechanics6
Metallurgy1
Navigation1
Oil / petroleum8
Technology21