Experts worry about the fuel pools because explosions have torn away their roofs and exposed their radioactive contents.
因为氢气爆炸掀翻了机组厂房的屋顶并且把放射性物质抛散到外部，原子能专家担心燃料池。
Most cylinders are designed to vent contents when exposed to elevated temperatures.
大多数钢瓶设计得可以在暴露于高温时排出内容物。
In the event a cylinder is exposed to fire or other sources of excess heat, the fusible plug is designed to melt and release the cylinder contents.
在钢瓶暴露于火或其它的过热源的情况下，易熔塞熔化，钢瓶释放出内容物。
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