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水密试验 shuǐmì shìyàn
econ. a watertight test
interntl.trade. watertight test
oil water-tight test
tech. waterproof test
水密试验: 36 phrases in 10 subjects
Automobiles1
Aviation1
Chemistry1
Consulting1
Engineering geology2
Mining1
Nautical2
Oil / petroleum2
Shipbuilding15
Technology10