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通过对中国应用广泛的分流拉杆调节四通的局部阻力的实验研究及分析，得出其阻力系数的变化规律。实验数据在工程设计中具有实用价值。
Through the experimental study and analysis on the application of a wide range of shunt rods in China to adjust the local resistance, the change law of the drag coefficient was obtained. Experimental data in engineering design has practical value.