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path length
avia.	软通路长度; 轨迹长度
el.	光程长度
met.	路径长度
oil	通路长度
tech.	波程长度
telecom.	行程; 沿路径的
path-length
agric., meteorol.	路径长度

path length: 79 phrases in 18 subjects

Air defense	1
Automobiles	3
Aviation	2
Desert science	1
Electric machinery	27
Electronics	7
Engineering geology	1
General	1
Information technology	4
Metallurgy	3
Oil / petroleum	2
Physics	1
Plastics	1
Rail transport	2
Shipbuilding	1
Space	2
Technology	18
Telecommunications	2