We talked about thermal expansion, including linear and volume expansion.

我们也谈到了热膨胀 纵向膨胀和体积膨胀。

Volume expansion is just like linear expansion, except that the change happens in all three dimensions.

声膨胀与纵向膨胀相同，除了 这种变化发生在三个方面。

As with linear expansion, the bigger the object is in the first place, the more it’ll expand or contract.

与线性膨胀一样， 物体越大，它膨胀或收缩得越多。

As with linear expansion, the bigger the object is in the first place, the more it'll expand or contract.

与纵向膨胀的情况一样，材料增加的越大， 它扩展和收缩的越多。

In the case of a bridge, the change is in its length -- what's known as linear expansion.

我们在常量一集中讨论过，在这种情况下 桥梁的长度变化，称为纵向扩展。

The only other thing that the change in length depends on is that coefficient of linear expansion, represented by the Greek letter alpha.

唯一的其他变化取决于 长度是线性膨胀的程度，用 alpha 表示。

And the equation that we use to describe linear expansion, says that the change in length is equal to what's known as the coefficient of linear expansion

以及我们用来描述线性膨胀的方程 就是长度的变化等于线膨胀的程度。