duration of combustion 燃烧时间 ; 燃烧持续时间
The results show that the combustion duration decreases with the increase of air-fuel ratio and propane proportion;
缸内最高燃烧压力随空燃比的增大而减小，随丙烷比例的增加而增大；
Density increase, the energy density is big, the combustion duration increased dramatically, can be directly applied in coal-fired boilers.
密度提高，能量密度大，燃烧持续时间大幅增加，可以直接在燃煤锅炉上应用。
A new type of combustion chamber has been developed to tackle defects such as short combustion duration and incomplete combustion in high-speed gasoline engines.
开发了一种新型燃烧室，解决小型高速汽油机燃烧时间短、燃烧过程不充分的难题。
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