试验

Tests were carried out on the new aircraft.

The experiment worked well.

The experiment succeeded/failed.

in the experimental/testing stage

endurance/strength/service test

scientific experiment

air trial; flight test

preliminary test

test interval

testing specification

testing expenses

experimentation cost

test routine/program; testing program/sequence

try experiments upon oneself

do a skin test (for)

carry out/do/conduct/make an experiment

ban/cease a testing

try out a new machine