这无疑是飞行限制在人们记忆中最重大的例证。
This is certainly one of the most significant instances of flight restrictions in living memory.
结合实例证明合理地优化设计能够很好地组织贫煤的燃烧，对节能降耗具有重大的意义。
It was proved that the Meager Coal's combustion can be organized very well through reasonable optimization design and it is significant to energy saving and lower consumption.
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