学习了密度知识以后，同学们接触到两种仪器：社杯和密度计．同学们可能会问：密度计可以测量液体的密度，星杯也可以测设（间接）液体的密度，那么，这两种仪器有哪些【别呢？为了让同学们加深对这两种仪器的理解，列表说明如下：注①量杯可直接测出液体的体积；如果先在扶杯 After learning the knowledge of density, the students were exposed to two kinds of instruments: social cup and densitometer. Students may ask: The density meter can measure the density of the liquid, and the star cup can also measure the (indirect) liquid density. So what are the two types of instruments? In order to let the students deepen the understanding of these two kinds of instruments, the list is as follows: Note 1 The measuring cup can directly measure the volume of the liquid; if the first in the help cup