阶背式轿车队列的平均减阻率最大。
The drag reduction of the notchback car platoon is the most.
研究结果表明：管的壁厚越小，自激振动的减阻率越大；
Results show that the thinner the thickness of the flexible tube, the bigger the decrease rate of the friction coefficient;
阶背式轿车队列的平均减阻率最大，直背式次之，快背式最小。
The drag reduction of the notchback car platoon is the most, that of the squareback is the next, and the fastback is the least.
另外，输气温度对减阻效果影响较大，低温时减阻率明显降低。
The drag-reducing property of the compounding system was decreased obviously when they were used at low temperature.
提出了滑板在湿软土壤中滑行时，气幕条件下的阻力和减阻率的数学模型。
Two mathematical models are presented to depict the resistance and the resistance-reduction rate in an air curtain between soil and slide moving on a moist and soft ground.
本文讨论了减阻剂聚合物的分子量、分子量分布、分子结构以及不同物性的原油对减阻率的影响。
The effect of molecular weight, molecular weight distribution, molecular structure of the polymer and behavior of the crude oil on drag reducing efficiency are represented.
对减阻率的分析表明，三种非光滑表面均能起到减小旋成体阻力的作用，总阻力最大减阻效果为5%左右。
The test results indicated that all 3 kinds of nonsmooth surfaces can reduce the drag of bodies of revolution, the maximal reduction rate is about 5%.
分析结果表明，共聚物的减阻效果比相同分子量的均聚物要好，而相同分子量均聚物的减阻率随侧链长度的增加而降低。
The test and study results indicate that DR of copolymer is better than homopolymer with same molecular weight and DR of homopolymer with same molecular weight decreases as len…
分析结果表明，共聚物的减阻效果比相同分子量的均聚物要好，而相同分子量均聚物的减阻率随侧链长度的增加而降低。
The test and study results indicate that DR of copolymer is better than homopolymer with same molecular weight and DR of homopolymer with same molecular weight decreases as len…
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