| 1. | To answer this question, we need to plot trajectories of principal stresses .
为了回答这个问题，我们尚须画出主应力迹线图。 |
| 2. | Thus the directions that emerge for extremizing the normal stress are the directions corresponding to the principal stresses .
因此，产生最大正应力的方向就是相应于主应力的方向。 |
| 3. | The orientation of the principal stresses relative to the directions of the polarizer and first quarter-wave plate is of course immaterial .
主应力相对于起偏镜和第一个四分之波片方向的方位，当然是无关紧要的。 |
| 4. | Major intermediate , minor principal stress
最大中最小主应力 |
| 5. | Strength criterion of rock and effect of medium principal stress
岩石的强度准则及中间主应力的影响 |
| 6. | Maximum principal stress theory
最大枝力理论 |
| 7. | Trajectory of principal stress
枝力轨迹 |
| 8. | Principal stress direction
枝力方向 |
| 9. | Axial principal stress
轴向主应力 |
| 10. | Line of principal stress
枝力轨迹 |
