结果表明，缩短一次风管道内导流板的长度是可行的。
The test results show that it is feasible to shorten the length of guide plate in a primary air pipe duct.
掌握煤粉锅炉一次风管中煤粉浓度的分布情况，对提高锅炉效率有很重要的意义。
The concentration distribution of pulverized coal in primary air pipe is very important for advancing efficiency of boiler.
在增加磨煤机再循环风管的同时缩小一次风管径，使进入炉膛的冷风量减少了8.12%(总风量)。
Through installing recirculation tube on the mill and shrinking the primary air pipe diameter, the percentage of cool Sir To combustor is reduced by 8. 12%.
在每个房间回风管的前面板上安装有一台一次性的非毛织品过滤器，以及一台板式可洗粗铝过滤器，以捕捉收集可能产生的任何粉尘。
A disposable non-woolen filter, and a panel type washable coarse aluminum filter are installed in the front panel of return air duct of each room, to trap powder generated, if any.
在每个房间回风管的前面板上安装有一台一次性的非毛织品过滤器，以及一台板式可洗粗铝过滤器，以捕捉收集可能产生的任何粉尘。
A disposable non-woolen filter, and a panel type washable coarse aluminum filter are installed in the front panel of return air duct of each room, to trap powder generated, if any.
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