本文以碰撞几率定律——电子自由程分布律为基础，进行统计计算，导出了碰撞次数公式及电子繁流公式。
The microscopic processes of an electron avalanche are discussed and calculations are made by the statistics of collision probability.
至于这个公式里的其他元素，b和T1直接相关，它由袭击次数n的对数和袭击间隔Tn的关系计算得出。
The other element of the equation, b, turns out to be directly related to T1. It is calculated from the relationship between the logarithms of the attack number, n, and the attack interval, Tn.
计算公式为：目标心跳次数区域=220—年龄×（60%〜85%），它并不是一成不变的，可以根据健身者的锻炼目标和身体状况来决定。
The formula for obtaining a target heart rate equals 220 minus your age x 60% - 85%, depending on the individual's fitness goals and physical condition.
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