causal variable

• 随机变量

causal variable的用法和样例：

例句

1. An estimator is a random variable.
   估计量是一个随机变量。
2. By contrast, the paper calculated the reliability index of the abutment after changing variable quotiety of the stochastic variable.
   作为对比，本文还在改变各随机变量变异系数的前提下，计算了坝肩岩体各高程的可靠指标。