| 1. | Several items of importance in the calculation of instability zones are first presented .
首先介绍在不稳定区域计算中的某些重要项目。 |
| 2. | Winning technology in unstable occurrence region of coal seams
煤层赋存不稳定区域采煤的回采工艺 |
| 3. | Determining for dynamic instability domain of spatial frame structures
框架结构的动力不稳定区域确定方法探索 |
| 4. | Based on the analyzing results , the eccentric loading increased the dynamic - instability district of the arm and would be adverse to its dynamic - stability
结果表明，荷载偏心增大了支臂的动力不稳定区域，不利于支臂的动力稳定。 |
| 5. | If any of you happen to be especially concerned about bananas and beef , you could probably stand up and give a soliloquy on that . and now we in the united states have been confronted with a very difficult decision , because they ve made a decision that we think is plainly wrong , in an area that affects our export economy
因此当我们把焦点放在强大的中国将来可能对美国构成的潜在挑战上时，也不要忘记衰弱的中国，深为内部冲突、社会不安和犯罪活动所苦的中国，成为亚洲一大片不稳定区域，所可能带来的危险。 |
| 6. | This paper introduced the dynamic - stability analysis methods of the arm by using the theory of elastic stability , established the dynamic - stability calculating model of the arm , ascertained the dynamic - instability district of the arm and discussed the influences of the dynamic - instability under eccentric loading based on the radial gate of the xinzheng project on the jialing river
本文从弹性稳定理论角度出发，介绍了支臂动力稳定的分析方法，建立了支臂动力稳定分析的计算模型，求解了支臂在偏心荷载作用下的动力不稳定区域，以嘉陵江新政工程弧形闸门为工程实例讨论荷载偏心对支臂动力不稳定区域的影响。 |
| 7. | By using the method of construct boundary condition at the entrance , it did a research on the formation principle of karman vortex and believed that there was no direct relationship between the formation and the object itself . the existence of the object just provided a basic current in the space to generate a absolutely unstable district and so the explanation of absolutely unstable model near wake flow is more suitable
通过采用构造入口边界条件的方法，对k rm n涡街的形成机理进行研究，认为涡街的生成与物体本身无直接关系，物体的存在只是在空间内提供了可以产生绝对不稳定区域的基本流，因而近尾迹绝对不稳定模式的解释较为合适。 |
| 8. | It is shown in the simulation that sliding mode control can guarantee the stability and robustness while vehicle is braking even if abs operates at the instability region of the adhesion coefficient and wheel slip curve or the surface condition changes , which is better than the pid control and nonlinear pid control
仿真结果显示，即使在附着系数和滑移率关系曲线的不稳定区域，或是路面状况发生变化，滑模控制也能保证制动的稳定性和鲁棒性，其控制效果优于pid和非线性pid控制效果。 |
