impactorn.冲击器(卧式锻造机；硬着陆宇宙飞船)impactn.影响；冲击力；撞击vt.挤入；压紧；撞击；对 ... 发生影响vi.冲击；撞击；产生影响impact frequency撞击频率impact wear test冲击磨损试验impacting method撞击法impact ductility冲击韧性impact responses冲击响应impact extrusion冲挤,冷挤压impact stiffness碰撞刚度impacting proton碰撞质子impacted incisor阻生切牙impact materials共存物

1. The pitot-static tube can be used only in free air.
   皮托管仅能用在自由流中。