求翻译：多元回归分析建立了体长和体高估计体重的回归方程为Y =- 33.749 + 0.688X1（X1为条斑星鲽的体长），为条斑星鲽选种提供了理论依据和理想的测度指标。是什么意思？

Multiple regression analysis, body length and body height estimated weight regression equation y = - 33.749 + 0.688x1 (x1 for spot stars flounder body length), spots star flounder selection provide a theoretical basis and the ideal measure indicators .

Multiple regression analysis has been established and the body length-weight of the estimated regression equation for Y = 33.749 + 0.688 X - 1 to 1 (X Brill's article in the STAR), the star article for brill option that provides a theoretical basis and an ideal measure indicators.

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Multiple regression analysis to establish the length and height of the estimated weight of the regression equation for Y=-33.749+0.688X1 (X1 spotted flounder verasper moseri length), provided a theoretical basis for spotted flounder verasper moseri selection and an ideal index.

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