pressure difference短语¹¹⁴⁴⁶⁷⁺⁴ 基本例句 压力差 Difference of pressure makes a liquid flow through a siphon.压力差使得液体通过虹吸管。 The pressure control systems provide cabin differential pressure by controlling the outflow of air from the faselage.压力控制系统通过控制机外气流来提供客舱压力差。