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1·Lower friction factor, in avoid of damage of hull.

降低摩擦系数，保护船体不受损伤。

2·The results show that the friction factor measured is reliable and the computation method …

通过试验证明了测定的摩擦阻力系数是可信的，拟定的计算方法是实用的。

3·Because of the complexity of turbulent flow, it is a tough issue to determine its friction factor.

鉴于紊流运动的复杂性，其沿程阻力系数确定起来较为困难。

4·The results indicate the friction factor will be reduced with the increasing silicon adding amount.

结果表明：摩擦系数随硅助剂添加量的增加而降低；

5·The results show that the friction factor measured is reliable and the computation method is practical.

通过试验证明了测定的摩擦阻力系数是可信的，拟定的计算方法是实用的。

6·Analyses parameter have inclined Angle, pipe diameter size, gas liquid ratio and friction factor and so on.

分析参数有：倾斜角度、管径大小、气液比和摩阻系数等。

7·Influential factors of friction factor of head loss are analyzed by adopting artificial neural network (ANN).

采用神经网络(ANN)方法对沿程水头损失系数的影响因素进行了分析。

8·The conditionality between the flow rate and the pipe diameter is discussed when the friction factor is fixed.

文中还分析了在摩擦阻力系数一定的情况下，流量与管径的制约关系。

9·The swatch values of friction factor of three kinds of precast buried heating pipe and backfilling sand is calculated.

通过对施工变量、运行变量的工程测量及计算得到三种规格的预制直埋供热管道与回填砂的摩擦系数样本值。

10·The error analysis of different empirical formula of friction factor is done and the applicable range of these formula is given as well.

笔者对计算摩擦系数的一些经验公式进行了误差分析，对经验公式的应用范围提出了个人的看法。