开管扩散装置
open tube diffusion system
导叶不同步装置MGV装置
misaligned guide vane MGV
改扩装置
reconstructed and extended equipment
进气口防扩装置
air intake guard mechanism
闭式水润滑尾轴尾管装置
closed type water lubricated stern tube
不碎光管装置
vandal-resistant fluorescent luminaire
附属装置管路组件数
attachment lines group number