启闭试验 meaning in English
actuation test
Examples
- Mushroom outlet closing and opening by hand to be inspected
菌形风帽手动启闭试验。 - Tightness test ( opening and closing test , emergency opening and closing test ) for cargo hatch cover
货舱舱口盖密性试验（启闭试验、应急启闭试验） 。
actuation test