These variables change depending on the data.
这些变量根据不同的数据而改变。
Plant process model will change if raw material property or variables change.
当带钢原料性质、处理量变化等也会导致过程模型发生变化。
Because you never change the states of your variables, proving your program is much easier.
由于从来没有改变变量的状态，所以证明您的程序非常简单。
Variables serve as placeholders for data that can change during the execution of a program.
变量为数据提供占位，使得其可以在程序运行时改变。
These variables represent a value that can change over time.
这些变量表示会随时间而变化的值。
If you want different results, change the variables.
如果你想要不同的结果，改变那些变量就是了。
OK, so far we are pretty happy. Now let's do a change of variables.
现在还是皆大欢喜，对变量做一点变化。
变数能改变。
Change the experiment device to produce the same amount of hydrogen to control variables.
改变实验装置，通过产生相同量的氢气来重新控制变量。
I'll run through the key variables and show how you can change them.
我将快速讲解主要的变量，展示如果和改变他们。
You will need to change some variables.
你需要改变一些变量。
However, these variables also change during the project.
然而，这些因素是随着项目的进行而变化的。
Immediate window to view or change variables and properties.
“即时”窗口查看或更改变量和属性。
An important method for evaluating integrals is a change in variables.
积分值的一种重要方法是变量代换法。
An important method for evaluating integrals is a change in variables.
积分值的一种重要方法是变量代换法。
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