简介了长输管道异型管件及补口防腐的两种方法，即高膜厚PU防腐涂料刷涂法和火焰塑料喷涂方法。
This paper briefly introduced two methods for anticorrosion of special piece and repaired mouth of long transportation pipeline, i. e , flame plastic spraying and high-build PU anticorrosive paint.
用这种方法研究了不同凹腔长深比、凹腔后缘倾角和不同燃料喷注方案对超声速燃烧火焰结构的影响。
Then the influence on flame structure of supersonic combustion of ratio of length and deep of cavity, obliquity of back edge of cavity and different schemes of fuel injection were studied.
型火焰锅炉以其自身的炉膛温度高、火焰行程长等特点，适于燃烧无烟煤等低挥发分燃料。
With the characteristics of long-flame and high temperature, down-fired boilers are used burn coals with low volatiles such as anthracite.
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