Then the intake valve closes, and an exhaust valve opens.

然后进关闭，打开 排。

The exhaust valve leads to a condenser, which cools the steam back into water.

排通向凝器，凝器 蒸汽返回水中。

Last step, exhaust valve opens, piston travels up, it forces that spent burnt gases out your exhaust pipe, out into the atmosphere.

最后一步，排打开，活塞向上移动，它迫使燃烧过从排管向下进入大。

The U.S. space agency says it encountered an issue with a panel on the mobile launcher that controls the core stage vent valve.

美国航天局表示，移动发射装置上控制核心级排面板出现了问题。

The fresh water is circulated through the engine to cool the cylinder jackets, cylinder heads, exhaust valves and turbo-blowers.

新鲜水在发动机内循环，用于缸套、缸盖、排和涡轮增压器。