RNA is a molecule similar to DNA, except that its molecules are usually much smaller.

RNA是一种类似于DNA的分子，但是其分子量比DNA小得多。

A molecular mass of 180 could be either the glucose, galactose or fructose.

分子量为 180 的可能是葡萄糖、半乳糖或果糖。

For some metabolites, we can measure their molecular mass using mass spectrometry instruments.

对于一些代谢物，我们可以使用质谱仪器测量它们的分子量。

Oncotic pressure results from the the inability of solutes like large proteins - albumin for example - to move across through the capillary.

胶体渗压是由不能穿过毛细管的溶质产生，像是大分子量蛋白质，比如白蛋白。

This is a risk for people taking warfarin, especially in large doses, without an overlapping rapid-onset blood thinner such as heparin or low molecular weight heparin.

这在服用华法林的患者中存在风险，尤其是当大剂量使用且没有叠加使用如肝素或低分子量肝素等速效稀释剂时。

And the thing about molecules that work as drugs ... FABIO URBINA: Is they have a certain molecular weight range, they have certain properties.

至于用作药物的分子… … FABIO URBINA：它们有一定的分子量范围吗？它们有一定的特性吗？

The chemical parameters that we used for instance it was the molecular weight of compound, or the fact that the compound possesses or not some functional groups.

Boevé：我们使用的化学参数例如是化物的分子量，或者化物具有或不具有某些官能团的事实。

Finally, it needs iron to thrive and replicate, so it produces a siderophore, which is a term used for a group of small, high-affinity, iron chelating compounds that snatch iron from host cells.

最后，它需要人体内的铁元素来繁殖，所以它形成一种“铁载体”；铁载体是指微生物成并分泌的螯铁的、用于摄取铁元素的低分子量化物，他们可以与宿主细胞竞争铁元素。

Using a combination of electrophoresis (which sorts proteins according to their size and electrical properties) and mass spectrometry (which sorts fragments of those proteins according to their weight), she was able to do just that.

Molette 博士使用电泳（根据蛋白质的分子大小和电荷差异，将蛋白质分离）和质谱（根据分子量将蛋白碎片分离）测定来进行实验。