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密性试验
nautic., tech. tightness test
密性 试验
: 102 phrases in 23 subjects
Automobiles2
Aviation4
Business2
Chemistry2
Earth sciences2
Electric machinery2
Electronics6
Engineering geology1
Hydroelectric power stations2
Management1
Mechanics2
Metallurgy3
Mining1
Nautical8
Oil / petroleum8
Oil processing plants1
Rail transport4
Refrigeration1
Shipbuilding23
Space4
Technology21
Telecommunications1
United States1

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