N the winged fruit of the ash 梣树的果实，有翼
What's key in having volcanic eruptions affect the weather is both the duration of the eruption, and how high the ash gets blasted into the stratosphere, according to Hufford.
说如果Hufford仍持续的间断喷发的话，那么就值得我们担忧了。他称，火山爆发影响天气的关键因素是火山爆发期间和喷发到大气中的火山灰的高度。
The key to increase boiler efficiency is real - time and precise monitoring carbon content of fly ash.
提高锅炉运行效率的关键问题之一是实时、精确地监测锅炉飞灰中的含碳量。
The article introduces raw materials of fly ash brick, production process and control key points.
介绍粉煤灰制砖的原材料、工艺过程及生产控制要点。
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