6楼: Originally posted by yumo821 at 2011-10-11 06:37:15:
first, test your samples density D1, like Archimedes methods.
second, try to find the real density of SiO2 D2, internite
at  last, the relative density=D1/D2*100%.
I think its easy.
you can co ...

2楼: Originally posted by yumo821 at 2011-10-05 00:28:40:
relative density is the ratio, in 100% form, from the density of your sample to the real density of SiO2 ceramic(you can check it in Wiki or else). for example 90%.

2楼: Originally posted by yumo821 at 2011-10-05 00:28:40:
relative density is the ratio, in 100% form, from the density of your sample to the real density of SiO2 ceramic(you can check it in Wiki or else). for example 90%.