But, in our case, it's only 0,005% of the total mass of our planet.

但是，在我们的地球中，它只占我们星球总质量的0.05%。

That amount of loss would represent about 26 percent of the world's total glacier mass.

这一损失量将占世界冰川总量的26%左右。

On GJ1214-b however, water may account for up to 10% of the planet's total mass.

而 GJ1214b 星球的水量大概相当于其星球总质量的 10%。

The black hole is only a teeny tiny fraction of the total mass of the Milky Way.

黑洞只占银河系总质量的极小部分。

Well, very roughly, that's the total mass of every single car and truck in the United States.

很粗略地说，这是美国每辆汽车和卡车加起来的总质量。

Because the ions represent such a tiny proportion of the total mass, the water itself is essentially pure.

形成一个水合氢离子，和一个氢氧根离子。

And now we just divide by the total mass.

现在我们只除以总质量。

Since these impurities are accumulated over time, these allow us to relate the total mass of the rings with their age.

由于这些杂质是随时间而累积的，因此我们可以将光环总质量与其年龄联系起来。”

Scientists believe that on our distant neighbor, water could be up to 10% of the total mass of the whole planet.

科学家们相信，在我们遥远的邻居，水可能占到整个星球总质量的10%。

And the total mass of the system is 6 kilograms.

系统的总质量为 6 kg。

So we're only looking at the external forces, and we're gonna divide by the total mass.

所以我们只看外力，我们要除以总质量。

Everything we can see with telescopes makes up just about 15 percent of the total mass in the universe.

我们用望远镜看到的一切都只占宇宙总质量的 15%。

Fifteen thousand seven hundred species and subspecies, the total mass of every ant on the planet exceeds that of every bird and mammal combined.

地球上的蚂蚁有15700种和亚种，超过了鸟类和哺乳动物的总和。

I mean, seeing how it accounts for more than 60 percent of your total body mass, you pretty much are water.

我的意思是，看看它如何占你全身质量的 60% 以上， 你几乎就是水。

So if they'd used 9 million moles of that, the gas would have had a total mass of over 36 000 kilograms.

因此，如果他们使用了 900 万摩尔， 则该气体的总质量将超过 36, 000 公斤。

Now remember how different vehicles require a different fraction of propellant compared to their total mass to go from point A to point B?

现在还记得不同的车辆从 A 点到 B 点需要的推进剂占总质量的比例不同吗？

It says that the change in heat equals the specific heat capacity of the substance times its total mass times the change in temperature.

它表示热量的变化等于物质的比热容乘以其总质量再乘以温度变化。

The 4 kilogram ball’s mass times its position -- 3 meters -- is 12 kilogram-meters. And the total mass of the system is 6 kilograms.

4 公斤重的球的质量乘以它的位置（3 米）等于 12 公斤-米。系统总质量为 6 公斤。

Hebe is pretty big compared to other asteroids in the asteroid belt, but it still only makes up a tiny fraction of the total mass.

与小行星带中的其他小行星相比，Hebe 相当大，但它仍然只占总质量的一小部分。

So the products of this reaction always have less total mass – as measured in unified atomic mass units – than the parent nucleus has.

因此，该反应的产物总质量（以统一原子质量单位衡量）总是小于母核。