寿命

The reasons of the capacity attenuation have primarily to accompany with the Li~+ ion embedding material on discharge process the effect of Jahn-Teller of the occurrence, the deliquescence of the cathode manganese in the material and the decomposition of the electrolyte.

在锂离子电池众多的正极材料中，尖晶石型LiMn_2O_4化合物，由于其原材料资源丰富，价格低，环境污染小，合成工艺简单，成为最有希望取代LiCoO_2的材料，但LiMn_2O_4存在容量衰减大，循环寿命短等问题，阻碍了其商品化应用；容量衰减的原因主要有在放电过程中伴随着Li~+离子嵌入发生的Jahn-Teller效应，正极材(来源：AacBCbd论4b文网www.abclunwen.com)料中的锰的溶解和电解液的分解。

Methods:Expected life span was calculated based on the changing rules observed by demographist Coale and Demeny and the iterative model modified by Ca Ruide. Univiarite linear regression model was used to predict elder population coefficient.

采用人口普查资料、卫生事业发展资料，利用SAS9.0软件，根据人口学家Coale和Demeny提出的平均期望生命增长规律和查瑞传修订的迭代模型，预测河南省平均期望寿命，利用线性回归模型预测老年人口系数。

So the proposed method in this dissertation not only meet the requirements for fossil-fuel unit set in GB/T 12145-1999, but also can effectively restrain condensate and feed water system corrosion. Thereby the proposed method can reduce the loss by corrosion's leading accident, lower Fe content in boiler feed water, slow the boiler's scaling speed, delay boiler's chemical cleaning interval, effectively enhance unit's reliability, usability and using life and solve the problem of poisonous chemical deoxidant. So the proposed method can economize substantial expense for power plant.

所以，本文所提出的汽包炉有限氧化性水化学工况不但能满足GB/T12145-1999中对火力发电机组及蒸汽动力设备的要求，而且可有效抑制凝结水和给水系统的腐蚀，减少因这些部位腐蚀损坏而引发的事故停机损失，降低锅炉给水中的金属含量，减轻炉内的结垢速度，延长锅炉的酸洗间隔，有效提高机组的可靠性、可用率和使用寿命，同时也解决了有毒化学除氧剂的使用问题，为电厂节省大笔运行费用。

The equipment is expected to have a salvage value of $ 3 million and a depreciable life of 10 years.

该设备预计有打捞价值300万美元和折旧寿命为10年。

The widely used approach of recognizing an equal amount of depreciation expense in each period of a depreciable asset's useful life.

在可折旧资产的有效寿命期内，在每一期确认相等金额作为折旧费用的折旧方法。

Fixed assets ; economic life ; depreciable life ; method.

固定资产；经济寿命；折旧年限；方法

Depreciable assets: Physical objects with a limited life.

具有有限寿命的物质实体。

The term "depreciation" refers to the systematic amortization of the depreciable amount through a definite method during the useful life of the fixed asset.

折旧，是指在固定资产使用寿命内，按照确定的方法对应计折旧额进行系统分摊。

Attention to the depth of the charge must not be re-depth of discharge, it will greatly reduce the battery life, because the depth of discharge will reduce the number of battery electric red.

深度的充电后注意一定不要再深度的放电，这样会极大的减少电池的寿命，因为深度的放电会减少电池的冲电次数。

This study, therefore, demonstrates the role of the dermal microenvironment on epidermal regeneration and lifespan in vitro.

因此，这项研究证明体外真皮微环境在表皮的重建及寿命中的作用。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。