propellant burning rate

例句：

1. 1. The propellantburning rate is a critical factor in thedesign of spacecraft engines.
   推进剂燃烧速率是设计航天器发动机的关键因素。
2. 2. Theefficiency of the propellant burning ratehas a significant impact on the performance ofthe spacecraft.
   推进剂燃烧效率对航天器的性能有重大影响。
3. 3. The propellant burning rate is measured in units ofmass per unit time, which is crucialfor understanding the behavior of the engine.
   推进剂燃烧率以每单位时间的质量为单位，这对于理解发动机的行为至关重要。