序率变动的英文：
stochastic variable

stochastic是什么意思：
a. 随机的

I will explain the interrupted and stochastic phenomena for you.
我会为你们解释这一不规则、随机的现象。

This book deals with deterministic systems and does not include any analysis of stochastic phenomena
本书不分析随机现象，主要讨论确定性系统。

Deterministic models rather than stochastic statistical models has been little pursued in exploration geochemistry
在勘查地球化学中，几乎没有采用确定性模型，而是采用推测性模型。

Based on the ideal of stochastic medium, the ground ridging induced by frost heave submits to normal distribution.
根据随机介质的思想，土体冻胀引起的地表隆起近似为正态分布。

Response equations for stochastic problems are again taken to be those given in(1-46)
随机问题的输出方程还是取方程(1-46)所给定的那种形式。

variable是什么意思：
n. 可变的事物，可变的量
adj. 可变的，不定的；亮度变化的

The frequency inverters has a function of variable voltage and variable frequency.
频率逆变器具有变压、变频功能。

mode of random variables
随机变量的众数

subscript variable symbo
下标变量符号

voltage variable brightness diode
随电压变化亮度的二极管

The speed of the toy boat is variable.
玩具船的速度是可变的。