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叙述现有循环流化床锅炉风帽的缺点。用钟罩式风帽代替现有风帽,可延长使用寿命、降低事故率,效益显著。
Describe the shortcomings of existing circulating fluidized bed boiler hood. Replace the existing hood with a bell-style hood, which can prolong the service life, reduce the accident rate, and have obvious benefits.