The results indicate that, It works stability, convincible and quickly, Precision is high, the result of density of ethylene tar is well.

结果表明，U型振动管密度计工作稳定，方便快捷，测量精度高，用于乙烯焦油密度的测定效果较好。

youdao

The results indicate that, It works stability, convincible and quickly, Precision is high, the result of density of ethylene tar is well.

结果表明，U型振动管密度计工作稳定，方便快捷，测量精度高，用于乙烯焦油密度的测定效果较好。

youdao