Chinese ⇄ English Russian

观测线
el.	line of sight
eng.geol.	observation route
hydroel.st.	observation line; observing line
tech.	observed line; surveyed line; viewing line

观测 线: 92 phrases in 16 subjects

Air defense	2
Animal husbandry	1
Aviation	4
Earth sciences	4
Ecology	1
Electronics	5
Engineering geology	1
General	2
Hydroelectric power stations	2
Metallurgy	2
Nautical	2
Oil / petroleum	3
Space	15
Technology	46
United Nations	1
United States	1