Charles Lyell made a good estimate of the Tertiary Period from the fossil record, but his method could not be extended to earlier geological periods.
查尔斯·莱尔根据化石记录对第三纪作出了很好的估计，但他的方法不能扩展到更早的地质时期。
On the other hand, works with some taint—the wrong period, wrong colour, wrong size, wrong estimate—have a much tougher time finding buyers.
换言之，那些有点小毛病的作品，要么时机不对，要么色彩欠佳，要么大小不合适，要么估价错误，想得到买家的青睐可就难得多了。
Dr. Sabine said he agreed with the analogy, pointing out that his estimate for uptake up to 1994 was very close to Dr. Khatiwala’s for that period.
萨宾那博士表示同意这一类比，指出他截止到1994年的数据与卡蒂瓦拉博士同期的估算结果非常接近。
So the Fed seems to be resigned to hoping that keeping interest rates at current levels for a long period — 18 to 24 months is the current estimate — will do the job.
于是美联储似乎退而希望长期保持目前的利率——目前估计是18到24个月的样子——目标就能达到。
Trade surplus in the first quarter this year dropped by nearly 80% compared to last year's same period, and we estimate our trade surplus this year to fall below 3% of the GDP.
今年一季度贸易顺差同比下降接近80%，预计全年贸易顺差占GDP比重可能下降至3%以下。
There are no data on the actual number of black rural-urban migrants, but a defensible estimate would be a net of about 2.5 million during this 30-year period.
没有数据能表明具体的黑人乡-城移民数量，但据可靠估计，30年间的移民人数约为250万人。
Just record the date and the estimate of the distance. To keep them motivated, you can have them try to run a specific distance over a period of time, like 3 miles in a month.
为了让他们有坚持的动力，可以规定在固定时间里跑规定的距离，如一个月跑三英里。
The latent period and fuzzy estimate magnitude of the illusion were recorded.
记录被试报告的视动错觉出现的潜伏期和错觉模糊量。
Interferential equations are given after system models are transformed around optimization estimate of state to linearization and dispersed according to sampling period.
对系统模型进行了状态最优估计周围的线性化和采样周期的离散化，给出了干扰方程。
Finally, the next state estimate or predicted estimate may be got by global information after all state estimates relative to all observation point in this period have been obtained in turn.
最后，在顺序得到本周期内各个观测点处目标估计值的同时，也将获得下一时刻目标状态基于全局信息的估计值或预测估计值。
If a bank does not properly estimate collateral values, the collection upon default would become smaller and take a longer period of time, leading to a depletion of capital and lower profits.
如果银行不能准确估计抵押品价值，违约后能够收回的价值就降低了，所需要的时间也更长，导致资本损耗了利润降低。
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。
In this paper, we construct a dynamic adjustment model of foreign reserves and estimate the adjustment speed of foreign reserves of China in a period.
本文从货币分析理论出发，构建外汇储备动态调整模型，可通过模型估计我国的外汇储备调整速度。
By measuring how many of these meteorites fall to Earth over a given period of time, scientists can estimate how long it might have taken to deposit the observed amount of Ir in the boundary clay.
通过确定在一段给定时间内掉落在地球上的这种陨石的数量，科学家们就可以确定沉积隔层粘土的形成时间。
The investigators defined prevalence as an "estimate of the total number of cases of a disease existing in a population during a specified period";
研究者界定了患病率作为“特定时期内现有的疾病人口总人数的估计”；
The proposed algorithm adopts frequency partition to estimate the range of pitch period, improving the computational speed.
该算法采用频域分块估计候选基音周期的范围，提高了算法的计算速度。
Based on panel data, the fixed effects model and the random effects model are used to estimate the performance of agriculture loan in the period from 1999 to 2002 in China.
文章基于面板数据，利用固定效应估计法和随机效应估计法，对我国在1999年至2002年间农业信贷的绩效作出实证研究。
Bank financial forecast refers to an estimate of balance of the given receipts and disbursements for a particular period based on optimal information in hand currently.
银行财务预测是指基于目前所掌握的最佳信息，针对特定时期、特定收入与支出的估计。
Geologists estimate the seams of anthracite and bituminous coal in northern China, for instance, were formed from the Jurassic period onward.
地质学家估计中国北部的无烟煤和烟煤煤层形成于侏罗纪时期之前。
The method to estimate cavitation characteristic by analyzing impingement angle at the groove on porting plate of an axial plunger pump is put forward during design process period.
对柱塞泵设计过程中的空蚀特性，提出一种通过分析减压槽出口处的射流方向来评价高压轴向柱塞空蚀特性的方法；
Fatigue crack initiation is an important period in the whole fatigue life. The damage regularity of crack initial period cannot estimate with fracture mechanics which is used in large crack.
疲劳裂纹萌生阶段在整个疲劳破坏过程中占有极为重要的地位，而萌生阶段的裂纹体损伤规律用长裂纹断裂力学方法是无法确定的。
The Anticipated Hold period is only an estimate and shall not be construed as an undertaking or representation by Walton that the project will exit within this period.
预计持有年期纯属估计数字，并不代表和顿保证或表述该项目会在该年期内离场。
Under the allowance method, companies estimate the amount of the uncollectible accounts expense that will eventually result from a period's sale in order to reflect the expense during the same period.
采用备抵法时，公司根据同期销售产生的同比坏帐损失来预计产生坏帐费用金额总数。
In this paper, we estimate wealth effects of mergers between banking and insurance firms in the period 1997-2002.
本文将考察1997- 2002年间银行和保险公司并购所产生的财富效应。
AIM: to observe the cell density and morphometric characteristics of corneal endothelia in 4-30 years old children and youngsters and to estimate the changes in corneal endothelia during this period.
目的：观察4 ~ 30岁青少年儿童角膜内皮细胞的密度和形态特点及内皮细胞随年龄变化的规律。
Findings support the original estimate of 10 days as the maximum incubation period.
其中的发现支持原来最长潜伏期为10天的估计。
During the period of preliminary design and construction drawing design, the budget statement should be prepared respectively so as to optimize the cost estimate.
在初步设计、施工图设计阶段分别编制初步设计概算书和施工图设计预算书，进一步优化成本预算。
The model is based on different semantic relationships, and is estimated according to maximum likelihood estimation. Semantic distance is used to estimate semantic relationships in estimating period.
该模型定义在不同语义关系之上，基于极大似然估计法利用语义距离来对语义关系进行参数估计。
The model is based on different semantic relationships, and is estimated according to maximum likelihood estimation. Semantic distance is used to estimate semantic relationships in estimating period.
该模型定义在不同语义关系之上，基于极大似然估计法利用语义距离来对语义关系进行参数估计。
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