要测定液体的密度,通常需要测出液体的质量和液体的体积,再用该液体的质量除以该液体体积,就得出了该液体的密度。但是要测定人体血液的密度既不用上述方法也不使用密度计,因为那样做需要的血液量太大。那么怎样测出血液的密度呢?化验医师的巧妙做法是:预先准备好几支玻 To determine the density of a liquid, it is usually necessary to measure the mass of the liquid and the volume of the liquid, and then divide the mass of the liquid by the volume of the liquid to obtain the density of the liquid. However, to measure the density of human blood, neither the above method nor the densitometer is used because it requires too much blood. So how do you measure the density of blood? The clever way of the laboratory doctor is to prepare a few glasses in advance.