求翻译：运行时，煤中夹有大颗粒的石子、铁件等杂物的比重大，容易沉底，在沸腾层下部跳动，使沸腾质量变差，料层下部温度降低，应通过冷渣管定期排放使风室风压。料层温度恢复正常。是什么意思？

Run-time, there are large coal particles in stone, iron and other debris than significant, easy to sink to the bottom, the lower the boiling layer of beating, so that quality deterioration boiling, lower the temperature the lower material layer should be discharged through the cold residue managemen

When you run a large granules, coal, iron, etc. , the stones than junk in boiling, destructed at major, easily beating the boiling, so that quality information changed for the worse, the cold temperature reduction and should be adopted to Standard Chartered's periodic emissions 54~880room style. Inf

When movement, in the coal clamps has big sundry goods and so on pellet gravel, iron stock proportions is big, easy to depart for the deep, beats lower part the ebullition level, causes the ebullition quality variations, expects lower part the level temperature drop, should cause the wind chamber wi

When running coal there in large particles of gravel, iron pieces and other debris large proportion, overweight easily, beating in fluidized bed bottom, make boiling quality variation, bottom of bed temperature decrease, by slag cooling pipes to regularly discharge air chamber pressure. Material lay

When running coal clamps have a large proportion of particles of stone, iron and other debris, easy sea bed, fluidized bed bottom beat, make boiling quality variation, bottom of bed temperature drop should be emissions slag cooling tube via regular air chambers wind pressure. Bed temperature returne