The change rule of resultant flux and the fouling and slagging characteristics in boiler were discussed with dynamic changes of resultant flux, SEM, XRD and element analysis.
主要通过灰污热流的动态变化、SEM， XRD和能谱分析揭示炉内沾污结渣特性和灰污热流变化规律。
The construction elements of a bridge defects in dynamic testing, using spectrum analysis. Precast bridge beams by the lack of oblique angle, causing the bridge dynamic characteristics change.
采用频谱分析法对桥梁进行动力测试，得出由于该桥预制横梁斜交角度不足，从而引起桥梁动力特性发生变化。
An analysis and study on the characteristics of cultivated land dynamic change is very important in protection, growth and utilization of cultivated land.
耕地动态变化特征的分析研究。对耕地的保护，整理和开发利用均具有极其重要的意义。
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