ram compression的用法和樣例：
例句
- For example there are no ram air scoops on the roof, and no air vents on the wheel arches.
例如，沒有衝壓空氣水壺的屋頂上，並沒有通風口的輪拱。 - The dynamic performance of a ram air system will vary with Mach number and altitude and this tends to follow the aerodynamic characteristics of the missle.
像導彈空氣動力特性一樣，衝壓空氣式系統的動態特性隨馬赫數和高度的變化而變化。
