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预试验
busin. pretesting
dril. pretest
tech. preliminary examination; preliminary test; preliminary testing; range finding test; screening test; trial test
预〔初步,探索性〕试验
med. trial test
预[初步]试验
space trial test
预试验: 38 phrases in 20 subjects
Agriculture1
Animal husbandry1
Architecture1
Aviation2
Business1
Dermatology1
Earth sciences1
Economy1
Electric machinery1
Electronics5
General1
Hydroelectric power stations1
Metallurgy2
Nautical1
Plastics1
Shipbuilding1
Space2
Technology12
Telecommunications1
Textile industry1