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centre line
earth.sc.	轴线
hydroel.st.	中线
tech.	中轴心线
Centre Line
tech.	中心线

centre line: 137 phrases in 27 subjects

Architecture	3
Automobiles	7
Bridge construction	22
Business	2
Chess	2
Earth sciences	1
Economy	1
Electric machinery	1
General	6
Hydroelectric power stations	2
Hydrology	1
Metallurgy	2
Nautical	1
Petanque	2
Polo	2
Racing and motorsport	1
Rail transport	1
Shipbuilding	1
Shooting sport	1
Space	1
Sports	1
Swimming	1
Technology	51
Tennis	3
Textile industry	18
Typography	1
Volleyball	2