<img src="https://zk.995w.com/lqwvjeImg/ab/ab8b4b3456c1b3df846be9cdeab07d46.png">为麦克斯韦速率分布函数,<img src="https://zk.995w.com/lqwvjeImg/2f/2f9fbe4ff445b897ef65423b42e6e30b.png">为总分子数,那么<img src="https://zk.995w.com/lqwvjeImg/fa/fa29da9099fd65cf64ce2d80933ac710.png"> 表示 ( )<br>·速率在<img src="https://zk.995w.com/lqwvjeImg/2b/2b5e5481864b146919c424ac90a09a42.png">之间的<img src="https://zk.995w.com/lqwvjeImg/2f/2f9fbe4ff445b897ef65423b42e6e30b.png">个分子的速率和,<br>·速率在<img src="https://zk.995w.com/lqwvjeImg/2b/2b5e5481864b146919c424ac90a09a42.png">之间的分子的平均速率<br>·速率在<img src="https://zk.995w.com/lqwvjeImg/2b/2b5e5481864b146919c424ac90a09a42.png">之间的分子数,<br>·速率在<img src="https://zk.995w.com/lqwvjeImg/2b/2b5e5481864b146919c424ac90a09a42.png">之间的分子数占总分子数的百分率。