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拱线
nautic., tech. camber line
space apsidal line (两拱点的连线); line of apsides (航天器运行轨道近地点与远地点之间的连线)
tech. apse line; apsidal line; line of apsides; line of arch
拱线
construct. crown line
拱线: 218 phrases in 16 subjects
Architecture12
Aviation3
Bridge construction23
Construction1
Electronics4
Engineering geology1
Exhibitions1
Explosives and Explosive Ordnance Disposal1
General3
Hydroelectric power stations8
Metallurgy2
Nautical1
Oil / petroleum3
Rail transport1
Technology153
Textile industry1