介绍了厢式货车的减阻方法——主动控制边界层法和被动控制边界层法。
The paper introduces the resistance reduction methods of van type vehicles-actively boundary layer control method and passive boundary layer control method.
所提出的减阻机理及工程减阻方法对实现高粘度流体的低阻力管道输送具有重要的理论指导意义和工程应用价值。
The proposed drag reduction mechanism and drag reduction method are valuable both theoretically and in engineering to realize the low drag pipeline transport of highly viscous fluid.
本文综述了几种粘性减阻方法及其减阻的机理，联系了其在水相、油相中节约能源、材料，提高速度和效率等方面的应用。
The mechanism and methods of viscosity drag reduction are briefly discussed. Some of its applications for saving energy and materials, improving efficiency or reducing noise and vibration are given.
人们曾尝试利用多种主动控制方法减少壁面阻力，获得了不同的减阻效果。
Various active control strategies had been used to reduce skin friction, which achieved different results.
本文提出了底部排气弹减阻特性设计的一般原则与方法。
This paper presents the general principle and method of bleeding drag reduction characteristic design of base bleed projectile.
简要阐述了用于水下航行器各类减阻降噪技术的原理和方法。
The principles and methods of the drag and noise reduction technology used on underwater crafts are briefly introduced.
通过数值计算方法，模拟回转体在水下的航行，分析回转体周围流场、压强及其壁面上阻力的分布，并根据计算结果为该回转体设计了有效的微气泡减阻方案。
The flow field surrounding the revolving object, pressure and resistance distribution on its wall were calculated in order to design a micro-bubble reducing resistance scheme for the revolving object.
在非结构网格上对二维高超声速化学非平衡粘性绕流进行了数值模拟 ，并应用此方法对涵道构型高超声速减阻特性进行了数值分析。
Numerical methods for hypersonic flow with chemical non-equilibrium reactions on the unstructured grid are used to analyze the drag induction of channel-configurations.
在非结构网格上对二维高超声速化学非平衡粘性绕流进行了数值模拟，并应用此方法对涵道构型高超声速减阻特性进行了数值分析。
Numerical methods for hypersonic flow with chemical non-equilibrium reactions on the unstructured grid are used to analyze the drag induction of channel-configurations.
对有关挤出胀大、减粘降阻、熔体破裂及壁面滑移的研究进展进行了综述，指出气辅挤出技术是解决以上问题的有效方法。
The research advances about die swell, the reduction of friction between die wall and polymer melt, wall slip and melt fracture in polymer extrusion are described in the paper.
对有关挤出胀大、减粘降阻、熔体破裂及壁面滑移的研究进展进行了综述，指出气辅挤出技术是解决以上问题的有效方法。
The research advances about die swell, the reduction of friction between die wall and polymer melt, wall slip and melt fracture in polymer extrusion are described in the paper.
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