1) проба; испытание ( см. тж test )
2) попытка
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- acceleration-deceleration trials
- acceptance trials
- basin trials
- builder's trials
- calm-water trials
- clinical trials
- commissioning trials
- contractor's trials
- delivery trials
- dockside trials
- field trials
- foilborne trials
- fuel consumption trials
- hullborne trials
- levitated running trial
- measured mile trials
- mooring trials
- motion trials
- operational trials
- performance trials
- predelivery trials
- progressive speed trials
- progressive trials
- propulsion trials
- proving-ground trial
- rough-water trials
- running trials
- sea trials
- shore trials
- stability trial
- standardization trials
- standing-pull trial
- underway trials