The streamlined design reduces the area of high drag airflow. 流线型的设计能缩小高速拖曳气流的面积。
High-speed aircraft usually employ thin, low-drag, low-lift airfoils; slow aircraft that carry heavy loads use thicker airfoils with high drag and high lift. 高速飞机通常采用低阻力、低升力的流线型薄翼型,载重量大的低速飞机使用高阻力(HD)、高升力的厚翼型。
An experimental study of abrasive water jet and improvement on the jet performance with high polymer drag reduction 磨料射流及高分子减阻改善射流性能的实验研究
BENDING EXPERIMENT OF COMPOSITE BEAMS AT TRANSIENT HIGH TEMPERATURE Drag material change in hot runner injection molding 复合材料梁的热弯实验热流道注射成型的拖曳换料
Preparation and properties of high efficient drag reducing agent for crude oil 原油高效减阻剂的制备及其性能