You just turn on the gas, hit the electric starter.

打开阀 点。

Yeah, you've coked up the inlet valves and the plugs.

你把进阀塞憋住了。

Like these air pistons he uses to launch food or these catapults.

就像这个他用来发射食物阀活塞，或是这些弹射器。

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

然后进阀关闭，打开 排阀。

Then, an intake valve opens, allowing the steam into the engine.

然后，进阀打开，让 蒸汽进入发动机。

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

排阀通向冷凝器，冷凝器 蒸汽冷却并返回水中。

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，排阀打开，活塞向上移动，它迫使燃体从排管向下进入大。

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阀面板出现了问题。

Some of the blaze powder had fused to the sides of the intake valve, but it didn't seem completely clogged.

一些烈焰粉已经融合到进阀两侧，但似乎并没有完全堵塞。

Then, an intake valve opens, allowing the steam into the engine. The steam expands and moves a piston outward – that’s the work done by the engine.

然后，进阀打开，让蒸汽进入发动机。蒸汽膨胀并向外移动活塞——这就是发动机所做功。

This is even more likely to happen if the intake valve is only partially open, because there’s less room for the steam to enter and the water to escape at the same time.

如果进阀仅部分打开， 则更有可能发生这种情况，因为蒸汽进入水同时逸出空间较小。