水管系

shuǐ ɡuǎn xì
  • Water pipe system;department of hydraulic engineering and management;hydraulic piping
水管系水管系
  1. 由照相的底片洗出的印刷的图片。舱底水和压载水管系布置图

    A printed picture produced from a photographic negative . bilge and ballast piping arrangement