英语语法分析

They also impede backmixing of sand.

同时也可防止砂子的返混。

The RTD measured in a four—stage experimental equipment, and the backmixing rate is estimated.

在四段实验设备内测定了停留时间分布，并估算出段间返混流率。

Experimental results indicate that the extents of axial gas backmixing are related the gas velocity.

实验结果表明湍动床存在着明显的轴向返混，轴向扩散系数与气速有关。