Chemical products for industrial use . determination of density of solids in powder and liquids . pycnometric method 工业用化学制品.粉剂状固体和液体的密度测定.比重瓶法
2.
Carbonaceous materials for the production of aluminium . calcined coke and calcined carbon products . determination of the density in xylene . pycnometric method 铝生产用碳质材料.煅烧焦炭和煅烧制品.二甲苯密度测定.比重瓶法