当今网箱养鱼,是我国高密度集约化养殖的主体,研究网箱的式样有重要的开发价值。现在流行的式样是长方体。设网高为h,低面积为S(S=ab,a、b 分别为长、宽),则体积V=Sh,一口无盖网箱的网片面积为S 网=ab+h(2a+2b)=S+hL。若网箱的底面积(S 底)相等,网底分别制作长方形、正方形(边长为C)、圆形(半径为r)周长分别为L 长、L 正、L 圆, Today’s cage fish farming is the main body of intensive high-density aquaculture in China. The study of cage design has important development value. Now popular style is a rectangular parallelepiped. Suppose the net height is h and the low area is S (S = ab, a, b are respectively long and wide), the volume V = Sh, 2b) = S + hL. If the bottom of the cage (S bottom) are equal, the bottom were made rectangular, square (side length C), circular (radius r) circumference were L long, L positive, L round,