vacuum pressure valves的用法和樣例：
例句
- If the pressure builds up excessively, the pressure valve opens to relieve the pressure.
如果油箱內壓力過(guò)高，則壓力閥開(kāi)啟，以降低壓力。 - Release the paint line pressure and switch off the power before doing maintenance with the sprayer or changing accessories.
在保養噴漆槍或者更換配件之前，松開(kāi)噴槍壓力閥并且關(guān)閉電源。
