blast furnace gas ash 高炉瓦斯灰
The Oruanui eruption probably managed that, but a surer candidate is Sumatra's Toba blast, which released 2800 cubic kilometres of hot rock, ash and dust about 70,000 years ago.
奥努伊火山爆发就可能属于这一类，但是一个更有把握超级火山的候选者是苏门答腊岛的多巴火山爆炸。 约在70 000年以前，多巴火山在爆发时释放了2800立方公里的灼热的岩石、火山灰和尘埃。
Relieved of the overlying pressure, the volcano ejected a blast of rocks, ash, gas, and steam that blew down and buried several hundred square miles of forest.
随着顶部压力的解除，火山激烈喷涌出大股的岩石、灰尘、气体和蒸气，降落下来后覆盖了数百平方英里范围内的森林。
Does the company utilize any by-products such as Fly Ash or Blast Furnace Slag?
企业是否利用任何副产品例如粉煤灰或高炉矿渣？
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