But this is called the rate of effusion, not the velocity.

但这称为渗出率，而不是速度。

Careful calculation shows that Cl2's rate of effusion under these conditions would be 0.052 liters per minute, significantly slower than helium.

仔细计算表明，在这些条件下，Cl2 的渗出速度为每分钟 0.052 升，明显低于氦气。

We might measure amount in terms of moles or in terms of volume, but the rate of effusion never uses distance.

我们可能会根据摩尔数或体积来衡量数量，但积液率从不使用距离。

From his observations, Graham developed a formula -- now known as Graham's Law of Effusion -- for comparing the rates of effusion of different gases.

根据他的观察，格雷厄姆开发了一个公式——现在被称为格雷厄姆渗出定律——用于比较不同气体的渗出率。

Thomas Graham measured the rates of effusion for various gases and his results fit perfectly with what we already know: the more massive a gas is, the more slowly it moves.

托马斯格雷厄姆测量了各种气体的渗出率，他的结果与我们已知的情况完全吻合：气体的质量越大，它移动的速度就越慢。