JIS F8522-2012 船舶与海洋技术.电动舵角指示器 Ships and marine technology -- Electric rudder angle indicators ... 上一篇:JIS F 8521-2012 船舶与航运技术 螺旋桨轴转速表 电气式及非接触式下一篇:JIS F 9401-2012 Ships and marine technology - Marine echo-sounding equipment (Amendmen