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同心线 tóngxīnxiàn
agric. isocenter
athlet. concentric line
avia. concentric conductor
oil concentric stria
tech. concentrical line
同心线: 36 phrases in 13 subjects
Automobiles1
Cables and cable production4
Construction1
Electric machinery3
Electronics2
General2
Mechanics1
Metallurgy2
Oil / petroleum1
Shipbuilding1
Space1
Technology16
Telecommunications1