一、前言精密测量固体密度的方法,有比重天平的液中称量法和比重瓶测量法等几种。对微小的试料来说,这些方法都不适用,因而常常采用浮游法。所谓浮游法,就是利用固体试料在溶液中浮游时,试料和溶液有相同的密度,如果测出溶液的密度,就 First, the preface Precision measurement of solid density method, the proportion of the balance of liquid weighing method and pycnometer measurement method. For small samples, these methods are not applicable, so often using the floating method. The so-called floating method, is the use of solid samples floating in solution, the sample and the solution have the same density, if you measure the density of the solution, then