传统的孕周和胎重估计方法利用经验公式进行，结果离散度较大。
Several experiential formulae are used in the traditional method to estimate the gestational week and fetal weight. However, the results are dispersed.
据估计，破裂的冰重达300万吨。
It is estimated that the ice that broke off weighed three million tons.
宇航员估计最近发现的这颗行星质量比地球重45倍，一年有260天。
Astronomers estimate the newly-found planet is about 45 times more massive than Earth, and has a year lasting 260 Earth days.
据估计，这条鱼重达约一百磅，这也许将打破巴兰提耶女士的记录。
The fish was estimated at around 100lb, which would have broken Miss Ballantyne's record.
古生物学家估计，这只野兽长15米，重45吨，曾在一亿四千七百万年前生活于海洋之中。
Palaeontologists estimate the beast was 15 metres long, weighed 45 tonnes and hunted the oceans 147 million years ago.
康克林估计特拉维斯将近有200磅重。
这张画面的视场覆盖大约为50万光年，三重星系估计距离为3000万光年远。
The field covers over 500 thousand light-years at the trio's estimated distance of 30 million light-years.
例如，如果应用程序还没有准备好，当预期，或者如果你失去了资源，重铸你原来的估计，并告知大家关注。
For example, if the application is not ready when expected, or if you lose resources, recast your original estimates and inform everyone concerned.
正规变化重尾分布的尾部指数的估计方法有很多种，但都不同程度地存在一定的局限性。
The estimation of tail index for regular variation heavy-tailed distributions aroused our concern, many scholars proposed several methods, but all of them have some disadvantages.
多途时延估计广泛的应用于目标定位，波达方向估计等领域，因此具有十分重要的意义。
Time delay estimation was widely used in many areas such as target localization, directions of arrival (DOA) estimation.
据此，在利用材积密度法估计树干干重时，相同树种不同个体可以采用统一的平均密度值。
Same average density can be used to estimate stem dry weight of the same species of trees.
捕获重捕获方法常用于评审会后对产品残留缺陷数的估计。
Capture recapture models were often used to estimate the number of defects remaining in the product after inspection.
时变参数的估计问题，对于动态系统的控制是十分重要的。
Time varying parameter estimation is very important to the control of dynamic system.
在伪蒙特卡罗模拟应用于金融衍生证券定价过程中，标准维纳过程的构造方法对模拟估计的效果具有十分重要的影响。
Methods for constructing standard Winner Process can have a very important influence on estimation result of Monte Carlo simulation in the course of pricing financial derivative securities.
提出基于小波尺度图重分配的信号瞬态特征检测方法和瞬时能量估计方法，并应用于轴承在多种轻微故障状况下的振动非平稳特征的检测与表示。
The singal transient feature detection represent method, and a transient energy evaluation method are used based on the reassigned scalogram for the vibration non-stationary feature representation.
在扰动方程的正则化求解问题中，解的收敛性估计是十分重要的。
In the regular solution problem of the perturbation equation, the solution of convergence order is important.
某些估计只涉及到一重数值积分。
Some of these estimates involve only univariate numerical integrals.
在左截断右删失数据下，我们基于乘积限估计给出了分位密度估计，获得了分位密度估计及其导数的重对数律。
In this paper laws of the iterated logarithm for quantile density estimator and its derivative estimators are established when data are subject to left-truncated and right-censored observations.
在大肠癌的诊断与治疗中，充分地估计卵巢转移的可能性，恰当地施行预防性卵巢切除术是十分重要的。
It is very important to consider the possibility of the ovarian metastasis in patients with colonic cancer, and prophylactic oophorectomy is imperative in order to effect a cure.
信源数估计是空间谱估计中的关键技术，研究符合实际应用环境的稳健的信源数估计方法具有十分重要的现实意义。
It is very important to give out a new stable method of source number estimation to fit the real situation.
根据结构系统可观性，分别给出了观测一般结构和重频结构的前若干阶目标模态所需要最少传感器数量的估计方法。
The minimum number of sensors for observing a normal structure and a structure with repeated frequencies is studied respectively based on dynamic system observability.
第四章，从横向上介绍了校准估计量在二重抽样中的应用、在无回答中的应用，并推出其在样本轮换中的应用。
In chapter 4, introducing the application of calibration estimator in two-phase sampling, non-response and sampling rotation.
结果表明，重分配的小波尺度图能够以较高的时频分辨率表示轴承振动中的非平稳特征，反映轴承的多种故障，瞬时能量估计可以作为分析轴承状态的依据。
Results show that the reassigned scalogram has the signal feature in the time-scale plane with the high resolution, the transient energy evaluation has the transient feature in a more distinct as…
我也不知道。我估计可能是他们不喜欢吵闹的气氛。一些人喜欢和别人聊天但是不喜欢伴着永不停歇的重节奏音乐，在人头攒动的地方聊天。
Well, I don't know, I guess, maybe, people don't like noisy atmosphere, what I mean is, someone like talking with others but not in a crowded place with non-stop strong-beat music.
方差估计是抽样调查的重要组成部分，重抽样方法是常用的方差估计方法。
The variance estimation is very important part in sample survey, and replicated sample method is a common method.
该方法采用DDPF估计机器人路径，采用DDF估计陆标位置，同时采用可选重采样以降低样本贫化的概率。
This method adopted DDPF to estimate the path of robot and DDF to estimate the landmark position. It also adopted selectable resample to lower the probability of sample deletion.
重权数方法与重抽样方法类似，也是利用计算机的优势通过重复获得大量不同的子样本的重权数估计目标参数的估计量和方差估计量，是一种稳健、通用、有效的方差估计方法。
Replicate weight, which is similar with replicated sample method, gets a lot of replicated weights to obtain the estimators by computer, it is also a robust, common and effective method.
重权数方法与重抽样方法类似，也是利用计算机的优势通过重复获得大量不同的子样本的重权数估计目标参数的估计量和方差估计量，是一种稳健、通用、有效的方差估计方法。
Replicate weight, which is similar with replicated sample method, gets a lot of replicated weights to obtain the estimators by computer, it is also a robust, common and effective method.
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