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1·Conrad dies but Troy survives with a punctured lung, requiring a flutter valve in his chest to relieve pressure.

康拉德死了，但特洛伊活了下来，他的肺被刺破，需要胸腔里的一个翼阀来释放压力。

2·Before proceeding with the installation, close the main water supply valve, open a water faucet to relieve the house pressure and then close the faucet.

在安装热水器之前，关闭主供水阀门，打开水龙头将住宅内的水压释放掉，然后关闭水龙头。

3·Each hot water space heating boiler shall be equipped with a pressure relief valve set to relieve below the maximum boiler working pressure.

每个热水供暖锅炉都必须配置压力安全阀，其设置的泄压压力必须小于锅炉的最大工作压力。