Median length of life at birth

• 出生预期寿命中位数组距中值；组中值

Median length of life at birth的用法和样例：

例句

1. An improved median filtering algorithm is presented in this paper.
   摘要提出了一种改进的中值滤波算法。
2. Rolle's theorem is a special case of the mean value theorem.
   罗尔定理是中值定理的一种特殊形式。