污染使水体的估计寿命大为缩短。
Pollution shortens considerably the life expectancy of a body of water.
估计寿命是预计一个人能活得平均年数。
Expectation of life is the average Numbers of years that a person is expected to live. The expectancy of life is the prediction of average years a person can live.
美籍墨西哥人的估计寿命是57岁，美国印第安人为44岁。
The life expectancy for Mexican - Americans is estimated at 57 years, and for American Indians at 44 years.
这项工程估计寿命仅仅50到100年之间，对于这个地区来说只是眨眼之间。
The project has an estimated life span of only 50 to 100 years, a blink of the eye in this region.
因此在第二章，本人用半参数方法提出了协变量测量有误差时的中值回归模型，用它来估计寿命变量的中值。
In the second chapter, I propose semi-parametric estimate to get median regression models with the measured error margin and use it to estimate the mediant of survival data.
从1960年到1968年，尽管白人男子的估计寿命保持在67.5岁，黑人男子的估计寿命在此期间整整减少了1岁(从61.1岁减至60岁)。
Although the life expectancy of 67.5 years for white men remained the same from 1960to 1968, the life expectancy for black men declined a full year during that time (from 61.1 to 60.0).
科学家们估计，吸烟使预期寿命平均缩短了大约两年时间。
Scientists estimate that smoking reduces life expectancy by around 2 years on average.
学者们对努比亚砂岩含水层寿命的估计相差悬疏，从一百年到一千年不等。
Estimates for the life of the Nubian sandstone aquifer range from a century to a millennium.
硬盘从来不是为了长期储存数据而使用的媒介，这一工具从未接受过类似CD光盘之类的测试以估计其使用寿命。
Hard drives were never intended for long-term storage, so they have not been subjected to the kind of tests used to estimate the lifetimes of formats like CDs.
他估计，在一辆公交车12年的寿命期间，液压混合动力公交车将比常规的柴油车节省20%的成本以及比一辆柴油-电力混合动力车节省30%的成本。
He estimates the hydraulic hybrid bus would offer a 20 percent cost savings over a conventional diesel during a 12-year lifespan and a 30 percent cost savings over a diesel-electric hybrid.
自从特纳勋爵的报告以来，官方估计的目前65岁老人的平均寿命又增加一年。
Official estimates of life expectancy for 65-year-olds have already increased by over a year for both men and women since Lord Turner's report.
自从特纳勋爵的报告以来，官方估计的目前65岁老人的平均寿命又增加一年。
Official estimates of life expectancy for 65-year-olds have already increased by over 【 5 】 a year for both men and women since Lord Turner's report.
公司介绍说，就典型轮胎的使用寿命来估计，这种轮胎为车主节省下来的汽油可以多行驶4000公里(合2500英里)。
The company estimates that, over the life of a typical tyre, it will save its owner enough petrol to drive more than 4,000 extra kilometres (2,500 miles).
公司介绍说，就典型轮胎的使用寿命来估计，这种轮胎为车主节省下来的汽油可以多行驶4000公里(合2500英里)。
The company estimates that, over the life of a typical tyre, it will save its owner enough petrol to drive more than 4, 000 extra kilometres (2, 500 miles).
第三幅地图显示了距今840万年前的地球，这是NASA给这个23英尺的卫星估计的地球寿命。
Finally, the third map shows Earth 8.4 million years from now, which is the total life estimated by NASA for this 23-inch satellite.
研究人员估计洞螈的平均寿命为69岁，最多能活100岁，但是到目前为止这些洞螈没有显现出任何衰老的迹象。
Yet they “do not show any time of senescence, ” write the researchers, who estimate the olm’s average lifespan to be 69 years, with an upper limit at the century mark.
他们从世界卫生组织由28种传染病导致的伤残调整寿命年（DALYs）损失的数据估计出疾病负担。
They estimated the disease burden from World Health Organisation data on DALYs (disability-adjusted life years) lost caused by 28 infectious diseases.
在一个超过8000个家庭参与调查的研究中，他发现在英格兰的大部分贫穷地区的人们估计仅仅有50年的健康寿命，比起发达地区，几乎少了20年。
In a study of over 8000 families, he found that in the most deprived parts of England people can barely expect 50 years of healthy life, nearly two decades less than in affluent areas.
当然，气球不会和传统发电站寿命一样长（每只估计有一年的工作寿命）。
Of course, balloons do not last as long as conventional power stations (each is estimated to have a working life of about a year).
结合实例说明了含有删失数据的可靠性函数估计的几种方法，对于现场寿命数据分析与可靠性评估具有参考价值。
Illustrated with examples, it has reference value for the field life data analysis and reliability evaluation, illustrating several estimation methods concerning reliability function of deleted data.
科学家估计吸烟平均要减少12年的平均寿命。
Scientists estimate that smoking reduces life expectancy by around 12 years on average.
在英国，目前约有7,000人在肾脏器官移植申请中等待，并且，据估计器官的需要数量将随平均寿命的增长而增加。
Almost 7,000 people in the UK are currently on the waiting list for a new kidney, and demand for the organs is expected to grow as the average life expectancy increases.
一个大型挡风玻璃雨刷厂的经理，需要估计一下在一般驾驶条件下雨刷平均使用寿命的期望值有多大。
A large manufacturer of windshield wiper blades needs to estimate the mean life users of the blades can expect under typical driving conditions.
本文的主导思想是讨沦和分析冲击载荷下螺旋弹簧质量系统的动态响应，并应用名义应力疲劳设计方法估计其平均寿命。
The thought of this paper is to discuss on and analysis to dynamic response of HSMS under impact load, and estimate its mean life based on noted stress fatigue design method.
研究人员通过1991年-2000年的死亡率数据来估计对预期寿命的影响。
The researchers estimated the impact on life expectancies using mortality data from 1991-2000.
在符号的数字显示，估计在几年的寿命。
The number in the symbol shows the estimated lifetime in years.
在密钥管理中，合适的密钥更新周期将在密钥安全性和更新代价之间取得平衡，密钥泄漏过程首次被研究以估计密钥寿命。
Proper key renewal period might control the trade-off between security and renewal cost in key management, and thus key exposure was first studied to estimate key life.
在密钥管理中，合适的密钥更新周期将在密钥安全性和更新代价之间取得平衡，密钥泄漏过程首次被研究以估计密钥寿命。
Proper key renewal period might control the trade-off between security and renewal cost in key management, and thus key exposure was first studied to estimate key life.
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