bulk viscosity

例句：

1. 1.The thick oil is used to lubricate machinery.
   这种浓稠的油用来润滑机器。
2. 2.The material has a high bulk viscosity, making it difficult to work with.
   这种材料的高粗粘滞性使得它难以加工。
3. 3. Bulk viscosity measurements are essential for understanding the behavior of fluids under shear stress.
   体积粘度测量对于理解流体在剪切应力下的行为至关重要。