正推力 meaning in Chinese

forward thrust
positive thrust

The result of investigation on drags of cavities under combustion condition , with different injection schemes and fuel equivalence ratio , indicates that it is smaller than it ’ s of cold flow , and decreases with increasing fuel equivalence ratio , and could be converted into the
研究发现:凹腔火焰稳定器热试阻力小于冷流阻力,并随着当量比的增加而减小,最终会表现为正推力。综合论文研究成果,提出了多凹腔燃烧室设计技术。