The linear relationship between the nodularity and acoustic velocity has been accepted.

球墨铸铁的球化率随超声声速的线性变化关系已经被人们所认同.

It is shown that acoustic velocity of tap water is faster than that of the polymer solution.

实验结果表明，水中的声传播速度大于聚合物溶液中的声传播速度。

A new method using reference layer and adjusting acoustic velocity for calibrating thin reservoir was proposed.

提出以参考层为标准,并对声波速度进行微调的薄储层的标定方法.

With the concentration of the polymer solution increasing, acoustic velocity of the polymer solution decreases, and the polymer density decreases too, but the apparent viscosity increases.

随着聚合物溶液浓度的增加，其声传播速度减小，其密度值也逐渐减小，但其表观粘度值逐渐增大。