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to phrases
观察玻璃
IT
sight glass
met.
observation glass
观察
窥视
玻璃
auto.
inspection glass
观察 玻璃
:
20 phrases
in 10 subjects
Automobiles
1
Drilling
3
General
1
Metallurgy
3
Nautical
1
Oil / petroleum
3
Rail transport
1
Refrigeration
1
Technology
5
Textile industry
1
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