| ประโยคภาษาจีน : 中文句子 | 
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|  xiàng huǒ向火  cè侧  yǔ与  bèi背  huǒ火  cè侧  nóng dù浓度  bǐ比  zài在  de的  dà fàn wéi大范围  nèi内  kě可  tiáo jié调节  bǎo zhèng保证  le了  guō lú锅炉  zài在  biàn变  fù hè负荷  gōng kuàng工况  xià下  shí xiàn实现  zuì jiā最佳  nóng dàn浓淡  bǐ比  rán shāo燃烧 | 
| Concentration ratio of fire side to back side is adjustable within the wide range of 1 ~4 so as to ensure the realization of optimum rich-lean ratio firing under variable load conditions. |