noun🔗Share速度，迅速. Speed, swiftness; the condition of being rapid"The rapidity of her typing allowed her to finish the report before the deadline. "她打字的速度很快，所以才能在截止日期前完成报告。timequalityphysicsChat with AIVocabulary GamePractice Reading
noun🔗Share光速相对速度 A measure of velocity relative to the speed of light"The rapidity of the train's movement was measured relative to the speed of light, showing how incredibly fast it was traveling. "这列火车的运动光速相对速度被测量出来了，显示出它行驶得多么快。physicsscienceChat with AIVocabulary GamePractice Reading
noun🔗Share速度，快度 A measure of the velocity of a particle in a beam relative to the beam's axis"The electron beam's rapidity was crucial for the scanning electron microscope to create a detailed image of the tiny insect. "电子束的快度对于扫描电子显微镜创建这只微小昆虫的详细图像至关重要.physicsChat with AIVocabulary GamePractice Reading
