The lifetime estimation issue is analyzed with consideration to the periodical listen required by common WSN media access control (MAC) algorithms.
分析了符合传感器网络MAC算法中节点周期性侦听要求的节点寿命估算问题。
With the welding spot fatigue lifetime pre-estimation method, by combination of the finite element analysis and stress calculation, the welding spot fatigue damage under actual load can be calculated.
采用焊点疲劳寿命预估方法，通过有限元分析并结合应力计算，即可计算出实际载荷工况下的焊点疲劳损伤。
Modern plant management involves theory computations frequently, of which the estimation of plant optimal lifetime is a regular job for the plant manager.
现代设备管理中，经常会遇到理论计算问题，其中，设备最佳使用年限的估算对于设备管理人员来说，是一项常规性工作。
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