对照其模型阻力试验结果，提出了该形状物体的阻力近似计算公式并给出了相应的系数。
The coefficients of these formulas of resistance are also given according to the experimental result.
变态河工模型中，原型和模型之间要求满足阻力相似。
Resistance similarity between prototype and model must be satisfied in the distorted river model.
应用系统辨识方法建立拖拉机阻力控制系统犁耕阻力的数学模型。
With the method of system identification, a math model is set up in this paper.
应用系统辨识方法建立拖拉机阻力控制系统犁耕阻力的数学模型。
With the method of system identification, a math model is set up in this paper.
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