And because rings stay intact when they're down deep under water pressure, these dolphins keep their rings near the bottom. 因為環在水底時由於水壓的作用能夠保持完整，所以這些海豚讓它們的環靠近底部。
The Watts Feed Water Pressure Regulator must be installed on the cold water supply line to the boiler. 美國瓦茨進水壓力調節閥必須安裝在通往鍋爐的冷水供應管道上。
At last, the approximate calculation methods of pore water pressure and flowing pressure are presented. 給出土坡穩定性分析中對孔隙水壓力和動水壓力的近似計算方法。
