| 1. | The research on failure time prediction of landslides , therefore , is significant
因此，开展滑坡时间预报研究意义重大。 |
| 2. | Mean failure time mft
平均故障时间 |
| 3. | The model of the failure probability distribution was obtained by applying total failure time method for the numerical control punch
摘要运用故障总时间法初步确定数控冲床的故障概率模型。 |
| 4. | And the prediction results indicate that it is effective and satisfying to carry out the failure time prediction of landslide in this way
系统运行结果表明，基于mapgis的滑坡预测预报系统满足了滑坡预报的精度要求，取得了较好的效果。 |
| 5. | The failure time of the system is negatively exponential when it is in normal or abnormal , whereas repair time distribution and the distribution of t are continuous and general respectively
系统处于正常和异常状态的时间分别服从参数不同的指数分布，系统的修理时间是连续型随机变量，检测间隔时间为任意随机变量。 |
| 6. | Third , the accuracy of parameter estimate methods for the 2 - parameters weibull distribution and four different estimate methods for failure time based on the life of fixed time measurement are discussed
在无偏性和均方误差最小的意义下，得出了上述估计方法的优劣，为定时截尾、定时测试试验数据下的可靠性分析奠定了基础。 |
| 7. | At the end of the paper , the failure time predictions of several landslides - hongci landslide in yongjing of gansu province , xintan landslide , huanglongxicun landslide and wolongsi landslide are performed by using above methods and programs
论文最后使用基于gis的滑坡预测预报系统对甘肃永靖黄茨滑坡、新滩滑坡、甘肃天水黄龙西村滑坡以及卧龙寺滑坡进行了检验性预报。 |
| 8. | This paper studies the typical two - unit series maintained system , the distributing of the units life have been known . by random sample to the life of units and simulate with computer , uses monte - carlo method , counts the failure time of every unit , and failure rate - the reliability character of two - unit series system is derived , together with its curve
摘要研究了典型的两元件串联的可修系统，在已知元件的寿命分布的条件下，应用蒙特卡罗方法，对元件的寿命进行随机抽样并进行计算机模拟，通过统计每个元件故障的次数，得出了两元件串联可维修系统的可靠性特征量故障率，并绘出了曲线。 |
| 9. | The life span of the object is equal to the time from the starting using to the failure of the object , so we call the life span failure time . if we establish the laboratory situation exactly as the nuclear - powered , it will take us too much time ( more than 10000 hours ) and cost too much money
所谓加速失效就是，在不改变工作环境和一部分失效负载的情况下，只增加一项或几项特定的加速负载，以期在短时间内收集失效数据。这种加速失效试验的数据只有在真实加速的情况下是有意义的。 |
| 10. | The problems mentioned above include the theory and method to divide the failure time prediction into three phases of long term , short term and imminent term , the method and principle to select and process parameters used by the failure time prediction , the step to establish the criterions of prediction , the principle to classify and select the prediction models . at the same time , a new method to deal with the results produced by different prediction models is pointed out
本文首先深入探讨了与滑坡时间预报精度密切相关的一些基本问题：滑坡预报的时间分段、监测资料选取与处理、预报判据确定、预报模型的分类及其选取原则：提出了多个模型预报结果的处理方法；然后详细论述了verhulst 、指数平滑法、卡尔曼虑波等具有代表性的滑坡预测预报模型的建模机理及其适用原则。 |
