Kingfishers wedge themselves into water with a streamlined beak that gradually increases in diameter from tip to head, letting water flow past.
翠鸟流线型的长喙从尖端到头部的直径是逐渐增大的，潜水时会让水流向身后。
2
Flow field of shock wave passing by right Angle and wedge is analyzed using numerical method and numerical interference technique combining with experimental interferograms.
使用数值计算方法和数值干涉技术并结合实验干涉图片，分析了激波过拐角绕楔形物体运动的流场。
3
It is not recommended for high velocity flow or services where suspended particles can foul the wedge.