液压系统油油面
hydraulic system oil level
液压系统油油箱
hydraulic system oil tank
磁层-电离层系统(MI系统)
Magmetosphere-Ionosphere(MI) system
地下勘探图示系统
Graphic Exploration of the Subsurface
GEOS
无限维离散系统系统
Infinite dimensional discrete time systems
双速—定距桨推进系统
two speed fixed pitch propellerpropelling system
MWD定向钻进系统
MWD directional drilling system
船舶主推进系统
ship main propulsion system