比ひ推すい力りょくひすいりょくMeanings1nounspecific impulse; specific thrustengineeringTechnical term in rocket propulsion; measures the efficiency of a rocket engine, typically in seconds.このエンジンの比ひ推すい力りょくは約やく450秒びょうです。The specific impulse of this engine is about 450 seconds.
