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凹线
gen. chamfret
avia. groove
tech. chamfer; concave; concave-up (ward); scarf; splineway; concavity; concave upward
凹〔刻〕线
gen. groove
凹线: 137 phrases in 19 subjects
Agriculture2
Air defense1
Architecture12
Automobiles1
Aviation2
Biology1
Bridge construction4
Business1
Construction2
Earth sciences1
Electronics1
Engineering geology1
Exhibitions3
General9
Metallurgy1
Racing and motorsport1
Technology81
Telecommunications1
Textile industry12