This resulted in the Soviets being able to increase gas pressure through a preheater something american rocket scientists thought was impossible.
这就导致了苏联火箭可以通过加装一个预热器，来增加气体压强。 着在美国科学家看来是个不可能的事情。
2
The economical gas velocity and a optimal velocity proportion of air to gas for designing air preheater are also discussed.
同时还对卧式空气预热器的经济流速和最佳风烟速比进行了讨论。
3
This paper details structure dimensions, calculation formulas, improvement approaches etc. for preheater, precalciner, hot gas pipes and their subsidiary devices.