有效寿命

KrF激光器的工作介质是非储能介质，上能态有效寿命约为2-3ns，而电子束的泵浦时间一般为上百ns，放大超短脉冲激光时绝大部分上能态的储能没有被利用。

But the life time of KrF laser medium is only 2 ns while the pump time of e-beam pump KrF laser is over 100 ns .

Rb蒸气中的辐射陷获效应和5P（1/2）能级有效寿命的测量

Radiation Trapping Effect and Measurement of the Rb ( 5P_ ( 1 / 2 )) Level Effective Radiative Times in the Vapor

电池模型的额定输出功率是3W，总效率最高达5.6%，有效寿命最长达三年以上。

The rated power is 3 watts and the total energy converting efficiency obtained is 5.6 % . The effective lifetime is more than 3 years .

根据Holstein理论研究了碱土金属原子激光中的共振辐射俘获效应，分别计算了Ca，Sr和Ba蒸气激光在不同半径时产生共振辐射俘获效应的阈值温度、基态粒子数密度和共振能级的有效寿命。

The resonance radiation trapping in alkaline-earth metal atomic lasers were investigated according to Holstein 's theory . The threshold temperature , ground-state density and resonant level effective lifetime of the resonance radiation trapping were calculated for Ca , Sr , and Ba atomic vapor lasers with different tube radii .

利用这种方法处理测量所得的极光亮度数据，与用互谱方法计算的氧原子[OI32]跃迁时O（1S）态的平均有效寿命符合得很好。

The data processing illustrates that the effective mean lifetime of O ( 1S ) thus determined , resulted from the [ OI 32 ] transition of atomic oxygen , is in accordance very well with the one evaluated in frequency domain .

气相防锈膜有效寿命模型探讨

The Discussion of Effective Lifetime Model of Volatile Corrosion Inhibitor Film

有些塑料被设计成在它们有效寿命结束时可以腐烂掉或生物降解掉。

Some plastics are designed to rot or biodegrade when their useful life is over .

用低周疲劳裂纹扩展理论估算压力容器的有效寿命

The c ■ lculation of pressure vessel effective life by the theory of low CYALE fatigue crack propagation

因此切削刀具材料应具有高耐磨性以提高刀具的有效寿命。

The cutting tool material should therefore have high abrasion resistance to improve the effective life of the tool .

第一艘（401）可能已经接近它的有效寿命并可能不再操作。

The first boat ( 401 ) may have approached its service life and may no longer be operational .

延长悬索桥有效寿命的关键是对悬索桥运营后的检测及维修。

Detection and maintenance after the operating are the key point to extend the useful life of cable suspension bridge .

最大化网络有效寿命的传感器网络覆盖保持协议如何有效延长投影机灯泡的使用寿命

Useful Lifetime Maximization for Partial Coverage Conserve in Wireless Sensor Networks Ways to Effectively Increase the Service Life of Projector Bulbs

此方法比无菌体等量活性炭处理废水的有效寿命长。

In treating waste water , the method has an effective life longer than bacteria free activated carbon in equal amount .

气压式内充入纯氮气，不仅可保持阻尼的稳定性，还可减少油液汽化及泡沫化，延长产品有效寿命。

Gas-filled shock absorber injected with pure N2 , which not only keeps stability of damping force , but also reduce aerification and foaming , meanwhile , extend the effective life .

文中阐述了如何正确、合理的使用、维护保养钻探设备，提高设备的有效寿命，延长服役年限，以低成本、高效能促进矿山生产的发展，获得最佳经济效益。

The paper describes how to correctly and properly use and maintain the exploration equipment to extend their service life , and prompt mine production and obtain maximum economic results by lower cost and higher effectiveness .

此机制保证簇首的平滑转移，在保证跟踪精度的同时，均衡能耗，避免过早出现能量空洞，延长网络有效寿命。

The mechanisms ensure the smooth transfer of the cluster head and the tracking accuracy , at the same time balanced energy consumption and avoid premature energy hole , extending the useful life of the network .

模型能反映一些约束条件，如投资成本、运行维护成本、有效寿命、燃料使用效率、新能源利用的可能性和预期最大市场容量等。

The essential characteristics of the technologies are specified , such as their investment cost , operating and maintenance costs , service life , fuel use , efficiency , availability , output , and maximum expected market penetration .

本文依压力容器的工作特点，应用断裂力学中低周疲劳裂纹扩展理论对压力容器的有效寿命进行了估算，为压力容器的选材和设计提供必要的理论依据。

A effective life of pressure vessel is calculated by the theory of low cycle fatigue propagation according to the fact used feature , This method can be service to the design and choice of materials of pressure vessel .

在有效寿命期之内，现代核电厂的单位能源成本是太阳能电池板成本的四分之一，是太阳热能的40%，而后两种能源被视为无碳发电增长的主要推动力。

Across their useful lifetime , the costs per unit of energy for modern nuclear plants are a quarter the cost of solar panels and 40 per cent that of solar thermal energy , which are seen driving most carbon-free power growth .

通过对硅片的少数载流子有效寿命、硅太阳电池的反射损失和光谱响应这三个方面的研究，比较了目前主要的硅太阳电池表面钝化技术，对这些钝化技术的优缺点进行了分析和评价。

The main surface passivation methods for silicon solar cells at present were compared according to effective lifetime of minority carrier in Si wafers , reflection losses and spectral response of silicon solar cells . The advantages and disadvantages of these surface passivation technologies are analysed and estimated .

通过动态吸附试验，对比沸石再生前后的穿透曲线，发现沸石再生后的吸附能力与再生前相差无几，有效寿命达151h，比再生前寿命缩短仅17h。

Moreover , from the comparison of the penetrating curves of fore-and-aft regenerated zeolite , we can find that the adsorption capacity of regenerated zeolite is close to that of natural zeolite by dynamic test . The effective life is 151 h , 17 h less than the latter .

本文就三种折旧方法对项目评价指标的影响进行了比较分析，指出折旧方法的选用，都是由利率和资产有效寿命期末残值与原值的比率确定的。

The influence of three depreciation methods on items ' judgement indexes is compared and analyzed , and it is indicated that the choice of depreciation methods is confirmed by the interest rate and the ratio of the end-time remnant value of effective life of capital to original value .

有效贮存寿命超过一年。

The life time for storage is over one year .

各种置换术患者术后肢体恢复情况，假体有效使用寿命各不相同。

Different replacement skills sufferers ' limb resumes the situation , fake body valid service life is different not the same .

在额定负载能量下有效使用寿命大于10~7次。本文主要讨论灯的物理与工艺参数对其负载特性和辐射特性的影响。

The effects of the physical and technical parameters of the lamps on the maximum energy loading and radiative characteristics are described .

递延费用应当在其有效经济寿命内摊销，我国规定的摊销期不超过10年。

Give delay charge to ought to be in its are effective the amortize inside economic life , the amortize that our country sets period do not exceed 10 years .

因此，依据该强度理论，可对发生蠕变损伤的热力构件或热力结构的有效使用寿命，作出更加合理的估计。

Therefore , according to this strength theory , we could make a more reasonable estimation of the effective using life of thermodynamic components or thermodynamic structures which had creep deformation .

接着，我们指出了有效专利寿命这一概念中所存在的乃在逻辑矛盾，并建议了一个更为合理的指标一专利制度的总保护程度。

Furthermore , we point out the intrinsic contradiction in the concept of the effective patent life concept advocated by O'Donoghue et al ( 1998 ) and suggest a more reasonable index O , the extent of entire protection .

结果说明，将灰色系统理论用于寿命试验数据预测有较高的精度，为有效缩短寿命试验时间提供了一个值得探讨的方法，为评定电能表的可靠性提供了依据。

The result shows that the gray system theory has a high precision of prediction . It provides method to shorten the lifetime test and reference of life prediction . It can be regarded as a support of reliability assessment of power meter .

合理开关灯控制节电；通过智能监控，杜绝非正常亮灯；提高电网设备和灯具寿命，能够使设备、灯具的有效使用寿命延长，每年可降低维护成本。

Reasonable control of energy saving light switch ; through intelligent monitoring , to prevent the non-normal lighting ; to improve network equipment and lamps life , enabling equipment , lamps to extend the effective life of a year to reduce maintenance costs . 2 .