shuǐ​píng​miàn

horizontal plane

shuǐ​píng​miàn horizontal plane

  1. horizontal
    level or flat; parallel to the ground or the surface of still water and perpendicular to a vertical line
  2. plane
    (math) a surface or plane

shuǐ​píng​miàn water level

  1. still water
    (literary) the surface of water when it is calm and not flowing
  2. surface
    surface; top; the outside or right side of a garment or fabric