The critical properties of virgin petroleum fractions from three Chinese crude oils were measured by semi sealed tube with gallium as pressure transfer medium instead of mercury .

自制半封闭管法临界性质测定装置，采用镓代替传统方法 中的汞作为传递压力 介质，实测了三种国产原油43个宽、窄直 馏馏分油的临界温度和临界压力。