Spray nozzles installed in the shelf, check whether the nozzle rotating flexible arm started to see the suitability of its elastic, add the site in the rotation amount of oil.
把喷头安装在喷架上，检查喷头转动是否灵活，拉开摇臂看其松紧是否合适，在转动部位加注适量机油。
2
The thruster contained a large-diameter, slowly rotating blade with nozzles that diffused the propulsive flow, minimizing the churning that would otherwise disturb the caked silt.
A very special rotating cavity with micro-turbine (de-swirl nozzles) was applied to investigate the flow characteristics inside the cavity under three mid rotating speeds.