氦气比空气轻得多并且是惰性气体，这意味着，当它与空气和明火接触不会燃烧，而氢气却会(请看下图)。
Helium is far lighter than air and is inert, which means it won't combust when you combine it with air and energy, like Hydrogen does (below).
应用修正的过量空气系数，提出基于最佳风煤比的在线识别燃烧优化控制系统。
This paper applies the amendatory exceed air coefficient and proposes an online optimum combustion system based on the best coal-air ratio.
废油制成的生物柴油燃烧后造成的空气污染通常也比柴油要小，包括颗粒物在内的污染物的排放量更少。
When burned, waste oil biodiesel is also generally cleaner for the air than diesel, emitting lower levels of pollutants, including particulate matter.
常规燃烧只存在于理想的燃料空气比中，叫作可燃性界限。
Conventional combustion can only exist within well-defined fuel to air ratios, known as the flammability limits.
当空气-燃料比变化时，燃烧干煤与燃烧高水分煤有着类似的试验结果。
For the combustion of dry coal, the results with varying air fuel ratio are similar to those for the combustion of high moisture coal.
当空气-燃料比变化时，燃烧干煤与燃烧高水分煤有着类似的试验结果。
For the combustion of dry coal, the results with varying air fuel ratio are similar to those for the combustion of high moisture coal.
应用推荐